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Korwisi B, Hay G, Forget P, Ryan D, Treede RD, Rief W, Barke A. Patients' perspective on the chronic pain classification in the 11th revision of the International Classification of Diseases (ICD-11): results from an international web-based survey. Pain 2024:00006396-990000000-00584. [PMID: 38709273 DOI: 10.1097/j.pain.0000000000003248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 03/09/2024] [Indexed: 05/07/2024]
Abstract
ABSTRACT The 11th revision of the International Classification of Diseases and Related Health Problems (ICD-11) aims at improving the lives of persons with the lived experience of chronic pain by providing clearly defined and clinically useful diagnoses that can reduce stigma, facilitate communication, and improve access to pain management, among others. The aim of this study was to assess the perspective of people with chronic pain on these diagnoses. An international web-based survey was distributed among persons with the lived experience of chronic pain. After having seen an information video, participants rated the diagnoses on 8 endorsement scales (eg, diagnostic fit, stigma) that ranged from -5 to +5 with 0 representing the neutral point of no expected change. Overall ratings and differences between participants with chronic primary pain (CPP) and chronic secondary pain (CSP) were analyzed. N = 690 participants were included in the data analysis. The ratings on all endorsement scales were significantly higher than the neutral point of 0. The highest ratings were obtained for "openness" (2.95 ± 1.93) and "overall opinion" (1.87 ± 1.98). Participants with CPP and CSP did not differ in their ratings; however, those with CSP indicated an improved diagnostic fit of the new diagnoses, whereas participants with CPP rated the diagnostic fit of the new diagnoses similar to the fit of their current diagnoses. These results show that persons with the lived experience of chronic pain accept and endorse the new diagnoses. This endorsement is an important indicator of the diagnoses' clinical utility and can contribute to implementation and advocacy.
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Affiliation(s)
- Beatrice Korwisi
- Clinical Psychology and Psychological Intervention, Institute of Psychology, University of Duisburg-Essen, Essen, Germany
| | - Ginea Hay
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Patrice Forget
- Epidemiology Group and Aberdeen Centre for Arthritis and Musculoskeletal Health, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen, United Kingdom
- Anaesthesia Department, NHS Grampian, Aberdeen, United Kingdom
- Societal Impact of Pain (SIP) Platform, Brussels, Belgium
| | - Deirdre Ryan
- Societal Impact of Pain (SIP) Platform, Brussels, Belgium
- Pain Alliance Europe (PAE), Brussels, Belgium
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
| | - Winfried Rief
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Clinical Psychology and Psychological Intervention, Institute of Psychology, University of Duisburg-Essen, Essen, Germany
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Mylius V, Moisset X, Rukavina K, Rosner J, Korwisi B, Marques A, Lloret SP, Kägi G, Bohlhalter S, Bannister K, Chaudhuri KR, Barke A, Tinazzi M, Brefel-Courbon C, Treede RD, de Andrade DC. New ICD-11 diagnostic criteria for chronic secondary musculoskeletal pain associated with Parkinson disease. Pain 2024:00006396-990000000-00497. [PMID: 38227568 DOI: 10.1097/j.pain.0000000000003138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 10/10/2023] [Indexed: 01/18/2024]
Affiliation(s)
- Veit Mylius
- Department of Neurology, Center for Neurorehabilitation, Valens, Switzerland
- Department of Neurology, Philipps University, Marburg, Germany
- Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Xavier Moisset
- Université Clermont Auvergne, CHU de Clermont-Ferrand, Inserm, Neuro-Dol, Clermont-Ferrand, France
| | - Katarina Rukavina
- Division of Neuroscience, Department of Basic & Clinical Neuroscience, King's College London, Institute of Psychiatry, Psychology & Neuroscience, London, United Kingdom
- Parkinson Foundation Centre of Excellence in Care and Research, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Jan Rosner
- Danish Pain Research Center, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Spinal Cord Injury Center, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Beatrice Korwisi
- Division of Clinical Psychology and Psychological Interventions, Institute of Psychology, University Duisburg-Essen, Essen, Germany
| | - Ana Marques
- Université Clermont Auvergne, CHU de Clermont-Ferrand, Inserm, Neuro-Dol, Clermont-Ferrand, France
| | - Santiago Perez Lloret
- Facultad de Medicina, Pontificia Universidad Católica Argentina, Buenos Aires, Argentina
- Departamento de Fisiología, Facultad de Medicina, Universidad de Buenos Aires, Buenos Aires, Argentina
- Observatorio de Salud Pública, Universidad Católica Argentina, Consejo de Investigaciones Científicas y Técnicas (UCA-CONICET), Buenos Aires, Argentina
| | - Georg Kägi
- Department of Neurology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
- Department of Neurology, Inselspital, Bern University Hospital, and University of Bern, Bern, Switzerland
| | - Stephan Bohlhalter
- Neurocenter, Luzerner Kantonsspital, Lucerne, Switzerland
- Department of Neurology, University of Zurich, Zurich, Switzerland
| | - Kirsty Bannister
- Division of Neuroscience, Department of Basic & Clinical Neuroscience, King's College London, Institute of Psychiatry, Psychology & Neuroscience, London, United Kingdom
| | - Kallol Ray Chaudhuri
- Division of Neuroscience, Department of Basic & Clinical Neuroscience, King's College London, Institute of Psychiatry, Psychology & Neuroscience, London, United Kingdom
- Parkinson Foundation Centre of Excellence in Care and Research, King's College Hospital NHS Foundation Trust, London, United Kingdom
| | - Antonia Barke
- Division of Clinical Psychology and Psychological Interventions, Institute of Psychology, University Duisburg-Essen, Essen, Germany
| | - Michele Tinazzi
- Department of Neurosciences, Biomedicine and Movement, University of Verona, Verona, Italy
| | - Christine Brefel-Courbon
- Department of Clinical Pharmacology and Neurosciences, University Hospital of Toulouse, Inserm, Toulouse, France
| | - Rolf Detlef Treede
- Department of Neurophysiology, Mannheim Center for Translational Neurosciences, and Department of Psychiatry and Psychotherapy, Central Institute for Mental Health, Heidelberg University, Mannheim, Germany
| | - Daniel Ciampi de Andrade
- Center for Neuroplasticity and Pain (CNAP), Department of Health Science and Technology, Faculty of Medicine, Aalborg University, Aalborg, Denmark
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Barke A, Korwisi B. Making chronic pain count: empirical support for the ICD-11 classification of chronic pain. Curr Opin Anaesthesiol 2023; 36:589-594. [PMID: 37552003 DOI: 10.1097/aco.0000000000001297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
PURPOSE OF REVIEW The purpose is to review the evidence that has been collected with regard to the new classification of chronic pain. In 2022, the World Health Assembly endorsed the 11 th revision of the International Classification of Diseases and Related Health Problems (ICD-11), and with it a new classification of chronic pain. RECENT FINDINGS The evidence from the formative field testing indicated that the categories were clearly delineated and the coverage of chronic pain excellent (<3% in remainder categories). Official WHO field tests showed that the classification works well within the technical parameters WHO classifications must conform to and outperformed the ICD-10 diagnoses in all respects. International field tests, in which clinicians diagnosed consecutive patients in settings of medium and high resources, showed substantial interrater reliability (κ = 0.596 to κ = 0.783) for the diagnoses and the clinicians rated their clinical utility as very high. Studies using complete hospital records demonstrated that with the information they contain, retrospective coding of the new diagnoses is possible and provides much more meaningful information than the ICD-10 diagnoses. SUMMARY The evidence supports the use of the new classification and highlights its informational gains - using it will contribute to making chronic pain count in many contexts.
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Affiliation(s)
- Antonia Barke
- Division of Clinical Psychology and Psychological Intervention, Institute of Psychology, University of Duisburg-Essen, Essen, Germany
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Eiamtanasate S, Smithiseth K, Zinboonyahgoon N, Korwisi B, Barke A, Rief W, Treede RD. The invisible cost of pain management by the current International Classification of Diseases coding system: a study in a tertiary care inpatient setting. Pain 2023; 164:2009-2015. [PMID: 37027141 DOI: 10.1097/j.pain.0000000000002899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 02/10/2023] [Indexed: 04/08/2023]
Abstract
ABSTRACT The International Classification of Diseases ( ICD ) is applied worldwide for public health data collection among other use cases. However, the current version of the ICD ( ICD-10 ), to which the reimbursement system is linked in many countries, does not represent chronic pain properly. This study aims to compare the ICD-10 with the ICD-11 in hospitalized patients in terms of specificity, clinical utility, and reimbursement for pain management. The medical records of hospitalized patients consulted for pain management at Siriraj Hospital, Thailand, were reviewed, and all pain-related diagnoses were coded into ICD-10 and ICD-11 . The data of 397 patients showed unspecified pain was coded 78% in the ICD-10 and only 0.5% in the ICD-11 version. The difference gap in the proportion of unspecified pain between the 2 versions is wider than in the outpatient setting. The 3 most common codes for ICD-10 were other chronic pain, low back pain, and pain in limb. The 3 most common codes for ICD-11 were chronic cancer pain, chronic peripheral neuropathic pain, and chronic secondary musculoskeletal pain. As in many other countries, no pain-related ICD-10 codes were coded for routine reimbursement. The simulated reimbursement fee remained the same when adding 397 pain-related codings, even if the cost of pain management, such as cost of labor, existed. Compared with the ICD-10 version, the ICD-11 is more specific and makes pain diagnoses more visible. Thus, shifting from ICD-10 to ICD-11 has the potential to improve both the quality of care and the reimbursement for pain management.
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Affiliation(s)
- Sarasate Eiamtanasate
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | | | - Nantthasorn Zinboonyahgoon
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Clinical Psychology and Psychological Intervention, Institute of Psychology, University Duisburg-Essen, Essen, Germany
| | - Winfried Rief
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Mannheim Center for Translational Neurosciences, Heidelberg University, Mannheim, Germany
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Reneman MF, Selb M, Korwisi B, Barke A, Escorpizo RS, Tu SW, Treede RD. Towards harmonizing the concepts and definitions of pain in the World Health Organization's Family of International Classifications. Pain 2023; 164:1240-1244. [PMID: 36728950 PMCID: PMC10184558 DOI: 10.1097/j.pain.0000000000002854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/16/2022] [Accepted: 11/01/2022] [Indexed: 02/03/2023]
Abstract
Supplemental Digital Content is Available in the Text.
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Affiliation(s)
- Michiel F. Reneman
- Department of Rehabilitation Medicine, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Melissa Selb
- ICF Research Branch, Nottwil, Switzerland
- Swiss Paraplegic Research, Nottwil, Switzerland
| | - Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Division of Clinical Psychology and Intervention, Institute of Psychology, University Duisburg Essen, Essen, Germany
| | - Reuben S. Escorpizo
- Department of Rehabilitation and Movement Science, University of Vermont, Burlington, VT, United States
| | - Samson W. Tu
- Center for BioMedical Informatics Research, Stanford University, Stanford, CA, United States
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neuroscience, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
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Korwisi B, Garrido Suárez BB, Goswami S, Gunapati NR, Hay G, Hernández Arteaga MA, Hill C, Jones D, Joshi M, Kleinstäuber M, López Mantecón AM, Nandi G, Papagari CSR, Rabí Martínez MDC, Sarkar B, Swain N, Templer P, Tulp M, White N, Treede RD, Rief W, Barke A. Reliability and clinical utility of the chronic pain classification in the 11th Revision of the International Classification of Diseases from a global perspective: results from India, Cuba, and New Zealand. Pain 2022; 163:e453-e462. [PMID: 34393200 DOI: 10.1097/j.pain.0000000000002379] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 06/11/2021] [Indexed: 11/26/2022]
Abstract
ABSTRACT Chronic pain affects 1 in 5 persons and contributes substantially to the global burden of disease. The 11th Revision of the International Classification of Diseases (ICD-11) includes a comprehensive classification of chronic pain. The aim of this ecological implementation field study was to evaluate the classification's interrater reliability and clinical utility in countries with different income levels. The study was conducted in 4 pain clinics in Cuba, India, and New Zealand. Twenty-one clinicians used the ICD-11 to diagnose and code n = 353 patients with chronic pain. Of these, 111 were assessed by 2 clinicians, and Fleiss' kappa was calculated to establish interrater reliability for any diagnosis assigned to ≥15 patients. The clinicians rated the clinical utility of all diagnoses. The interrater reliability could be calculated for 11 diagnoses. It was substantial for 10 diagnoses and moderate for 1 (kappa: 0.596-0.783). The mean clinical utility of the ICD-11 chronic pain diagnoses was rated as 8.45 ± 1.69/10. Clinical utility was rated higher for ICD-11 than for the commonly used classification systems (P < 0.001, η2 = 0.25) and differed between all centers (P < 0.001, η2 = 0.60). The utility of the ICD-11 diagnoses was rated higher than the commonly used diagnoses in Dunedin and Havana, and no difference was found in Kolkata and Hyderabad. The study showed the high interrater reliability of the new chronic pain diagnoses. The perceived clinical utility of the diagnoses indicates their superiority or equality compared with the classification systems currently used in pain clinics. These results suggest the global applicability of the classification in specialized pain treatment settings.
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Affiliation(s)
- Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Bárbara Beatriz Garrido Suárez
- Department of Pharmacology, Institute of Marine Science (ICIMAR), Havana, Cuba
- Pain Clinic, Hospital 10 de Octubre, Havana, Cuba
| | - Subrata Goswami
- ESI Institute of Pain Management, ESI Hospital Sealdah, Kolkata, India
| | | | - Ginea Hay
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | | | - Charlotte Hill
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
| | - David Jones
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
| | | | - Maria Kleinstäuber
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
- Department of Psychological Medicine, Otago Medical School-Dunedin Campus, University of Otago, Dunedin, New Zealand
| | - Ana Marta López Mantecón
- Pain Clinic, Hospital 10 de Octubre, Havana, Cuba
- Rheumatological Disease Reference Centre, Hospital 10 de Octubre, Havana, Cuba
| | - Gargi Nandi
- ESI Institute of Pain Management, ESI Hospital Sealdah, Kolkata, India
| | | | | | - Biplab Sarkar
- ESI Institute of Pain Management, ESI Hospital Sealdah, Kolkata, India
| | - Nicola Swain
- Department of Psychological Medicine, Otago Medical School-Dunedin Campus, University of Otago, Dunedin, New Zealand
| | - Paul Templer
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
| | - Maartje Tulp
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
| | - Naomi White
- Persistent Pain Service, Southern District Health Board, Dunedin Hospital, Dunedin, New Zealand
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
| | - Winfried Rief
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Division of Clinical and Biological Psychology, Department of Psychology, Catholic University of Eichstätt-Ingolstadt, Ingolstadt, Germany
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Barke A, Korwisi B, Jakob R, Konstanjsek N, Rief W, Treede RD. Classification of chronic pain for the International Classification of Diseases (ICD-11): results of the 2017 international World Health Organization field testing. Pain 2022; 163:e310-e318. [PMID: 33863861 PMCID: PMC8756346 DOI: 10.1097/j.pain.0000000000002287] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Revised: 02/20/2021] [Accepted: 03/08/2021] [Indexed: 11/25/2022]
Abstract
ABSTRACT Because chronic pain has been poorly represented in the International Statistical Classification of Diseases and Related Health Problems (ICD) despite its significant contribution to the burden of disease worldwide, the International Association for the Study of Pain (IASP) developed a classification of chronic pain that was included in the ICD-11 version as "MG30" and approved by the World Health Assembly in 2019. The objective of this field test was to determine how well the classification of chronic pain works in the context of the ICD-11. A web-based survey using the WHO-FiT platform recruited 177 healthcare professionals from all WHO regions. After a training on coding chronic pain hosted by the IASP Web site, participants evaluated 18 diagnostic codes (lines) of the 2017 frozen version of the ICD-11 and 12 vignettes (cases) describing chronic pain conditions. Correctness, ambiguity, and perceived difficulty of the coding were compared between the ICD-11 and the ICD-10 and the applicability of the morbidity rules for the ICD-11 verified. In the line coding, 43.0% of correct chronic pain diagnoses assigned with the ICD-10 contrasted with 63.2% with the ICD-11. Especially in cases in which the chronic pain is regarded as the symptom of an underlying disease, the ICD-11 (63.5%) commanded more correct diagnoses than the ICD-10 (26.8%). The case coding was on average 83.9% accurate, only in 1.6% of cases any difficulty was perceived. The morbidity rules were applied correctly in 74.1% of cases. From a coding perspective, the ICD-11 is superior to the ICD-10 in every respect, offering better accuracy, difficulty, and ambiguity in coding chronic pain conditions.
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Affiliation(s)
- Antonia Barke
- Clinical and Biological Psychology, Catholic University Eichstaett-Ingolstadt, Eichstätt, Germany
| | - Beatrice Korwisi
- Division of Clinical Psychology, Philipps-University Marburg, Marburg, Germany
| | - Robert Jakob
- Department of Classification and Terminologies, World Health Organization, Geneva, Switzerland
| | - Nenad Konstanjsek
- Department of Classification and Terminologies, World Health Organization, Geneva, Switzerland
| | - Winfried Rief
- Division of Clinical Psychology, Philipps-University Marburg, Marburg, Germany
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Korwisi B, Barke A, Kharko A, Bruhin C, Locher C, Koechlin H. Not really nice: a commentary on the recent version of NICE guidelines [NG193: chronic pain (primary and secondary) in over 16s: assessment of all chronic pain and management of chronic primary pain] by the Pain Net. Pain Rep 2021; 6:e961. [PMID: 34712885 PMCID: PMC8547929 DOI: 10.1097/pr9.0000000000000961] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/25/2022] Open
Abstract
The National Institute for Health and Care Excellence provides evidence-based advice that guides clinical practice. We highlight major criticisms related to the new guideline for chronic primary pain. The National Institute for Health and Care Excellence should revise their recent guideline to take into account all the available evidence on the treatment of chronic primary pain.
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Affiliation(s)
- Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Clinical and Biological Psychology, Catholic University Eichstaett-Ingolstadt, Eichstaett, Germany
| | - Anna Kharko
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom
| | - Clara Bruhin
- Division of Clinical Psychology and Psychotherapy, Faculty of Psychology, University of Basel, Basel, Switzerland
| | - Cosima Locher
- Faculty of Health, University of Plymouth, Plymouth, United Kingdom.,Division of Clinical Psychology and Psychotherapy, Faculty of Psychology, University of Basel, Basel, Switzerland.,Department of Consultation-Liaison Psychiatry and Psychosomatic Medicine, University Hospital Zurich, Zurich, Switzerland
| | - Helen Koechlin
- Division of Clinical Psychology and Psychotherapy, Faculty of Psychology, University of Basel, Basel, Switzerland.,Department of Anesthesiology, Critical Care, and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
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Korwisi B, Barke A, Treede RD. Evidence- and consensus-based adaption of the IASP complex regional pain syndrome diagnostic criteria to the ICD-11 category of chronic primary pain: a successful cooperation of the IASP with the World Health Organization. Pain 2021; 162:2313-2314. [PMID: 34448750 DOI: 10.1097/j.pain.0000000000002246] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 02/09/2021] [Indexed: 11/26/2022]
Affiliation(s)
- Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Division of Clinical and Biological Psychology, Department of Psychology, Catholic University of Eichstätt-Ingolstadt, Ingolstadt, Germany
| | - Rolf-Detlef Treede
- Mannheim Center for Translational Neuroscience (MCTN), Department of Neurophysiology, Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
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Korwisi B, Hay G, Attal N, Aziz Q, Bennett MI, Benoliel R, Cohen M, Evers S, Giamberardino MA, Kaasa S, Kosek E, Lavand'homme P, Nicholas M, Perrot S, Schug S, Smith BH, Svensson P, Vlaeyen JWS, Wang SJ, Treede RD, Rief W, Barke A. Classification algorithm for the International Classification of Diseases-11 chronic pain classification: development and results from a preliminary pilot evaluation. Pain 2021; 162:2087-2096. [PMID: 33492033 DOI: 10.1097/j.pain.0000000000002208] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 12/11/2020] [Indexed: 01/04/2023]
Abstract
ABSTRACT The International Classification of Diseases-11 (ICD-11) chronic pain classification includes about 100 chronic pain diagnoses on different diagnostic levels. Each of these diagnoses requires specific operationalized diagnostic criteria to be present. The classification comprises more than 200 diagnostic criteria. The aim of the Classification Algorithm for Chronic Pain in ICD-11 (CAL-CP) is to facilitate the use of the classification by guiding users through these diagnostic criteria. The diagnostic criteria were ordered hierarchically and visualized in accordance with the standards defined by the Society for Medical Decision Making Committee on Standardization of Clinical Algorithms. The resulting linear decision tree underwent several rounds of iterative checks and feedback by its developers, as well as other pain experts. A preliminary pilot evaluation was conducted in the context of an ecological implementation field study of the classification itself. The resulting algorithm consists of a linear decision tree, an introduction form, and an appendix. The initial decision trunk can be used as a standalone algorithm in primary care. Each diagnostic criterion is represented in a decision box. The user needs to decide for each criterion whether it is present or not, and then follow the respective yes or no arrows to arrive at the corresponding ICD-11 diagnosis. The results of the pilot evaluation showed good clinical utility of the algorithm. The CAL-CP can contribute to reliable diagnoses by structuring a way through the classification and by increasing adherence to the criteria. Future studies need to evaluate its utility further and analyze its impact on the accuracy of the assigned diagnoses.
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Affiliation(s)
- Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Ginea Hay
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Nadine Attal
- INSERM U-987, Centre d'Evaluation et de Traitement de la Douleur, CHU Ambroise Paré, Boulogne-Billancourt, France
| | - Qasim Aziz
- Centre for Neuroscience, Surgery and Trauma, Blizard Institute, Wingate Institute of Neurogastroenterology, Barts and The London School of Medicine and Dentistry, Queen Mary, University of London, London, United Kingdom
| | - Michael I Bennett
- Academic Unit of Palliative Care, University of Leeds, Leeds, United Kingdom
| | - Rafael Benoliel
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, Newark, NJ, United States
| | - Milton Cohen
- St Vincent's Clinical School, UNSW, Sydney, New South Wales, Australia
| | - Stefan Evers
- Department of Neurology, Krankenhaus Lindenbrunn, Coppenbrügge, Germany
- Department of Medicine, University of Münster, Münster, Germany
| | - Maria Adele Giamberardino
- Department of Medicine and Science of Aging, CAST, G D'Annunzio University of Chieti, Chieti, Italy
- European Palliative Care Research Centre (PRC),Department of Cancer Treatment, University Hospital Oslo, Oslo, Norway
| | - Stein Kaasa
- Department of Oncology, Oslo University Hospital, Oslo, Norway
- Institute of Cancer Research and Molecular Medicine, Department of Medicine, Norwegian University of Science and Technology, Trondheim, Norway
- Department of Clinical Neuroscience, Karolinska Institute, and Department of Neuroradiology, Karolinska University Hospital, Stockholm, Sweden
| | - Eva Kosek
- Department of Surgical Sciences Uppsala University, Uppsala, Sweden
- Department of Anesthesiology, Acute Postoperative Pain Service, Saint Luc Hospital, Catholic University of Louvain, Brussels, Belgium
| | - Patricia Lavand'homme
- Pain Management Research Institute, Faculty of Medicine and Health, University of Sydney and Royal North Shore Hospital, Sydney, Australia
| | - Michael Nicholas
- Pain Clinic, Cochin Hospital, Paris University, INSERM U987, Paris, France
| | - Serge Perrot
- Department of Anaesthesiology and Pain Medicine, Medical School, University of Western Australia, Perth, Australia
| | - Stephan Schug
- Division of Population Health and Genomics, University of Dundee, Dundee, United Kingdom
| | - Blair H Smith
- Department of Dentistry and Oral Health, Section of Orofacial Pain and Jaw Function, Aarhus University, Aarhus, Denmark
| | - Peter Svensson
- Research Group Health Psychology, Department of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - Johan W S Vlaeyen
- TRACE, Center for Translational Health Research, KU Leuven, Ziekenhuis Oost-Limburg, Genk, Belgium
- Department of Clinical Psychological Science, Maastricht University, Maastricht, the Netherlands
- The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shuu-Jiun Wang
- Brain Research Center and School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Neurophysiology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
| | - Rolf-Detlef Treede
- Division of Clinical and Biological Psychology, Department of Psychology, Catholic University of Eichstätt-Ingolstadt, Eichstätt, Germany
| | - Winfried Rief
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
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11
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Zinboonyahgoon N, Luansritisakul C, Eiamtanasate S, Duangburong S, Sanansilp V, Korwisi B, Barke A, Rief W, Treede RD. Comparing the ICD-11 chronic pain classification with ICD-10: how can the new coding system make chronic pain visible? A study in a tertiary care pain clinic setting. Pain 2021; 162:1995-2001. [PMID: 33449507 DOI: 10.1097/j.pain.0000000000002196] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Accepted: 12/09/2020] [Indexed: 11/26/2022]
Abstract
ABSTRACT Pain is a frequent reason for patients to ask for medical services. However, systematic information about the extent and impact of pain, especially in developing countries, has not been available up to now. We evaluated whether the 11th edition of the International Statistical Classification of Diseases and Related Health Problems (ICD) can fill this gap by coding all electronic out-patient medical records of the pain clinic at Siriraj Hospital in Thailand in 2019 (8714 visits), using the ICD-10 and ICD-11 browsers referenced on the WHO websites. The 3 most frequent pain-related codes in ICD-10 were R52.2 "other chronic pain" (29%), M54.5 "low back pain" (18%), and M79.6 "pain in limb" (13%). In ICD-11, the 3 most frequent codes were MG30.31 "chronic secondary musculoskeletal pain associated with structural changes" (28%), MG30.51 "chronic peripheral neuropathic pain" (26%), and MG30.10 "chronic cancer pain" (23%). Thus, using the currently valid ICD-10 system, roughly one-third of patient encounters were coded as "other chronic pain," and the next 2 were specifying the pain region rather than any underlying cause. By contrast, ICD-11 coding of the same patients identified underlying causes (bones and joints, somatosensory nervous system, cancer, or surgery), which provide guidance towards differential patient management. In our pain clinic, most patients suffered from chronic cancer pain, chronic neuropathic pain, and chronic secondary musculoskeletal pain, which were poorly defined or nonexistent in the current ICD-10 coding system. Compared with the ICD-10, the ICD-11 provides more detailed diagnostic categories and is more informative for clinical use, research, and resource allocation for pain-related conditions.
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Affiliation(s)
- Nantthasorn Zinboonyahgoon
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Siriraj, Bangkok, Thailand
| | - Choopong Luansritisakul
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Siriraj, Bangkok, Thailand
| | - Sarasate Eiamtanasate
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Siriraj, Bangkok, Thailand
| | - Sirikan Duangburong
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Siriraj, Bangkok, Thailand
| | - Virachat Sanansilp
- Department of Anesthesiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Siriraj, Bangkok, Thailand
| | - Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Antonia Barke
- Clinical and Biological Psychology, Department of Psychology, Catholic University Eichstätt-Ingolstadt, Eichstätt, Germany
| | - Winfried Rief
- Division of Clinical Psychology and Psychotherapy, Department of Psychology, Philipps-University Marburg, Marburg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Mannheim Center for Translational Neurosciences, Medical Faculty Mannheim, Heidelberg University, Heidelberg, Germany
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12
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Affiliation(s)
- Antonia Barke
- Catholic University of Eichstätt-Ingolstadt, Department of Clinical and Biological Psychology, Eichstätt, Germany
| | - Winfried Rief
- Department of Clinical Psychology and Psychotherapy, Marburg University, Marburg, Germany
| | - Beatrice Korwisi
- Department of Clinical Psychology and Psychotherapy, Marburg University, Marburg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Mannheim Center for Translational Neuroscience (MCTN), Medical Faculty Mannheim of Heidelberg University, Heidelberg, Germany
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13
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Barke A, Koechlin H, Korwisi B, Locher C. Emotional distress: Specifying a neglected part of chronic pain. Eur J Pain 2020; 24:477-480. [PMID: 31876333 DOI: 10.1002/ejp.1525] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/11/2019] [Accepted: 12/16/2019] [Indexed: 11/07/2022]
Abstract
We argue that in all randomized controlled trials that investigate treatments for chronic pain emotional distress should be reported. In a majority of cases, pain intensity and pain-related disability are measured, yet-despite guidelines to the contrary-pain-related distress is not included. We suggest that the new extension code for chronic pain as incorporated in the ICD-11 will be well suited to fill this gap at minute additional effort for the participants.
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Affiliation(s)
- Antonia Barke
- Biological and Clinical Psychology, Catholic University of Eichstaett-Ingolstadt, Eichstaett, Germany
| | - Helen Koechlin
- Division of Clinical Psychology and Psychotherapy, Faculty of Psychology, University of Basel, Basel, Switzerland.,Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Beatrice Korwisi
- Division of Clinical Psychology and Psychotherapy, Philipps University Marburg, Marburg, Germany
| | - Cosima Locher
- Division of Clinical Psychology and Psychotherapy, Faculty of Psychology, University of Basel, Basel, Switzerland.,Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA.,School of Psychology, University of Plymouth, Plymouth, UK
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14
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Affiliation(s)
- Rolf-Detlef Treede
- Neurophysiology, Center for Biomedicine and Medical Technology Mannheim (CBTM), Medical Faculty Mannheim of Heidelberg University, Mannheim, Germany
| | - Winfried Rief
- Department of Clinical Psychology and Psychotherapy, Marburg University, Marburg, Germany
| | - Beatrice Korwisi
- Department of Clinical Psychology and Psychotherapy, Marburg University, Marburg, Germany
| | - Serge Perrot
- Pain Clinic, Cochin Hospital, Paris Descartes University, INSERM U 987, Paris, France
| | - Milton Cohen
- St Vincent's Clinical School, UNSW Sydney, Sydney, New South Wales, Australia
| | - Michael Nicholas
- Pain Management Research Institute, Royal North Shore Hospital, University of Sydney, Sydney, Australia
| | - Johan W S Vlaeyen
- Research Group Health Psychology, University of Leuven, Leuven, Belgium.,Department of Clinical Psychological Science, Maastricht University, Maastricht, The Netherlands.,TRACE, Center for Translational Health Research, KU, Leuven-Ziekenhuis Oost-Limburg, Genk, Belgium
| | - Antonia Barke
- Department of Clinical Psychology and Psychotherapy, Marburg University, Marburg, Germany.,Catholic University of Eichstätt-Ingolstadt, Clinical and Biological Psychology, Eichstätt, Germany
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15
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Scholz J, Finnerup NB, Attal N, Aziz Q, Baron R, Bennett MI, Benoliel R, Cohen M, Cruccu G, Davis KD, Evers S, First M, Giamberardino MA, Hansson P, Kaasa S, Korwisi B, Kosek E, Lavand’homme P, Nicholas M, Nurmikko T, Perrot S, Raja SN, Rice ASC, Rowbotham MC, Schug S, Simpson DM, Smith BH, Svensson P, Vlaeyen JW, Wang SJ, Barke A, Rief W, Treede RD. The IASP classification of chronic pain for ICD-11: chronic neuropathic pain. Pain 2019; 160:53-59. [PMID: 30586071 PMCID: PMC6310153 DOI: 10.1097/j.pain.0000000000001365] [Citation(s) in RCA: 462] [Impact Index Per Article: 92.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The upcoming 11th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD) of the World Health Organization (WHO) offers a unique opportunity to improve the representation of painful disorders. For this purpose, the International Association for the Study of Pain (IASP) has convened an interdisciplinary task force of pain specialists. Here, we present the case for a reclassification of nervous system lesions or diseases associated with persistent or recurrent pain for ≥3 months. The new classification lists the most common conditions of peripheral neuropathic pain: trigeminal neuralgia, peripheral nerve injury, painful polyneuropathy, postherpetic neuralgia, and painful radiculopathy. Conditions of central neuropathic pain include pain caused by spinal cord or brain injury, poststroke pain, and pain associated with multiple sclerosis. Diseases not explicitly mentioned in the classification are captured in residual categories of ICD-11. Conditions of chronic neuropathic pain are either insufficiently defined or missing in the current version of the ICD, despite their prevalence and clinical importance. We provide the short definitions of diagnostic entities for which we submitted more detailed content models to the WHO. Definitions and content models were established in collaboration with the Classification Committee of the IASP's Neuropathic Pain Special Interest Group (NeuPSIG). Up to 10% of the general population experience neuropathic pain. The majority of these patients do not receive satisfactory relief with existing treatments. A precise classification of chronic neuropathic pain in ICD-11 is necessary to document this public health need and the therapeutic challenges related to chronic neuropathic pain.
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Affiliation(s)
- Joachim Scholz
- Departments of Anesthesiology and Pharmacology, Columbia University Medical Center, New York, NY, USA
| | - Nanna B. Finnerup
- Department of Clinical Medicine, Danish Pain Research Center, Aarhus University, Aarhus, Denmark
- Department of Neurology, Aarhus University Hospital, Aarhus, Denmark
| | - Nadine Attal
- INSERM U 987 and Assistance Publique – Hôpitaux de Paris, Hôpital Ambroise Paré, Boulogne Billancourt, France and Université Versailles Saint Quentin en Yvelines, Versailles, France
| | - Qasim Aziz
- Wingate Institute of Neurogastroenterology, Centre for Neuroscience and Trauma, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary, University of London, London, United Kingdom
| | - Ralf Baron
- Department of Neurology, Universitätsklinikum Schleswig-Holstein, Kiel, Germany
| | - Michael I. Bennett
- Academic Unit of Palliative Care, University of Leeds, Leeds, United Kingdom
| | - Rafael Benoliel
- Department of Diagnostic Sciences, Rutgers School of Dental Medicine, Rutgers, Newark, NJ, USA
| | - Milton Cohen
- St. Vincent’s Clinical School, University of New South Wales, Sydney, Australia
| | - Giorgio Cruccu
- Department of Human Neuroscience, Sapienza University, Rome, Italy
| | - Karen D. Davis
- Department of Surgery and Institute of Medical Science, University of Toronto, and Division of Brain, Imaging and Behavior in Systems Neuroscience, Krembil Research Institute, University Health Network, Toronto, ON, Canada
| | - Stefan Evers
- Department of Neurology, Krankenhaus Lindenbrunn, and Faculty of Medicine, University of Münster, Münster, Germany
| | - Michael First
- Department of Psychiatry, Columbia University, and New York State Psychiatric Institute, New York, NY, USA
| | - Maria Adele Giamberardino
- Department of Medicine and Science of Aging, and Centro Studi dell’ Invecchiamento e Medicina Traslazionale (CeSI-Met), G D’Annunzio University of Chieti, Chieti, Italy
| | - Per Hansson
- Department of Pain Management and Research Division of Emergencies and Critical Care, Oslo University Hospital, Oslo, Norway, and Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - Stein Kaasa
- European Palliative Care Research Centre (PRC); Department of Oncology, Oslo University Hospital, Norway; University of Oslo, Oslo, Norway
| | - Beatrice Korwisi
- Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Eva Kosek
- Department of Clinical Neuroscience, Karolinska Institute Stockholm, Stockholm, Sweden
| | - Patricia Lavand’homme
- Department of Anesthesiology and Acute Postoperative Pain Service, Saint Luc Hospital, Catholic University of Louvain, Brussels, Belgium
| | - Michael Nicholas
- Pain Management Research Institute, University of Sydney and Royal North Shore Hospital, Sydney, Australia
| | - Turo Nurmikko
- Institute of Aging and Chronic Disease, University of Liverpool, Liverpool, United Kingdom
| | - Serge Perrot
- Pain Clinic, Hôtel Dieu Hospital, Paris Descartes University, INSERM U 987, Paris, France
| | - Srinivasa N. Raja
- Division of Pain Medicine, Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, USA
| | - Andrew S. C. Rice
- Pain Research, Department of Surgery and Cancer, Imperial College, London, United Kingdom
| | - Michael C. Rowbotham
- California Pacific Medical Center Research Institute, San Francisco, California, USA
| | - Stephan Schug
- Medical School, University of Western Australia, and Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
| | - David M. Simpson
- Department of Neurology, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Blair H. Smith
- Division of Population Health Sciences, University of Dundee, Dundee, Scotland
| | - Peter Svensson
- Section of Clinical Oral Physiology, School of Dentistry, Aarhus University, Aarhus, Denmark, and Department of Dental Medicine, Karolinska Institute, Huddinge, Sweden
| | - Johan W.S. Vlaeyen
- Research Group Health Psychology, University of Leuven, Leuven, Belgium and Department of Clinical Psychological Science, Maastricht University, Maastricht, the Netherlands
| | - Shuu-Jiun Wang
- Neurological Institute, Taipei Veterans General Hospital and Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Antonia Barke
- Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Winfried Rief
- Clinical Psychology and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, CBTM, Medical Faculty Mannheim of Heidelberg University, Germany
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16
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Barke A, Korwisi B, Casser HR, Fors EA, Geber C, Schug SA, Stubhaug A, Ushida T, Wetterling T, Rief W, Treede RD. Pilot field testing of the chronic pain classification for ICD-11: the results of ecological coding. BMC Public Health 2018; 18:1239. [PMID: 30404594 PMCID: PMC6223095 DOI: 10.1186/s12889-018-6135-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 10/19/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND A task force of the International Association for the Study of Pain (IASP) has developed a classification of chronic pain for the ICD-11 consisting of seven major categories. The objective was to test whether the proposed categories were exhaustive and mutually exclusive. In addition, the perceived utility of the diagnoses and the raters' subjective diagnostic certainty were to be assessed. METHODS Five independent pain centers in three continents coded 507 consecutive patients. The raters received the definitions for the main diagnostic categories of the proposed classification and were asked to allocate diagnostic categories to each patient. In addition, they were asked to indicate how useful they judged the diagnosis to be from 0 (not at all) to 3 (completely) and how confident they were in their category allocation. RESULTS The two largest groups of patients were coded as either chronic primary pain or chronic secondary musculoskeletal pain. Of the 507 patients coded, 3.0% had chronic pain not fitting any of the proposed categories (97% exhaustiveness), 20.1% received more than one diagnosis. After adjusting for double coding due to technical reasons, 2.0% of cases remained (98% uniqueness). The mean perceived utility was 1.9 ± 1.0, the mean diagnostic confidence was 2.0 ± 1.0. CONCLUSIONS The categories proved exhaustive with few cases being classified as unspecified chronic pain, and they showed themselves to be mutually exclusive. The categories were regarded as useful with particularly high ratings for the newly introduced categories (chronic cancer-related pain among others). The confidence in allocating the diagnoses was good although no training regarding the ICD-11 categories had been possible at this stage of the development.
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Affiliation(s)
- Antonia Barke
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University Marburg, Gutenbergstr. 18, 35032 Marburg, Germany
| | - Beatrice Korwisi
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University Marburg, Gutenbergstr. 18, 35032 Marburg, Germany
| | | | - Egil A. Fors
- General Practice Research Unit, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | | | - Stephan A. Schug
- University of Western Australia & Royal Perth Hospital, Perth, WA 6847 Australia
| | - Audun Stubhaug
- Oslo University Hospital, University of Oslo, Kirkeveien 166, None, 0450 Oslo, Norway
| | | | | | - Winfried Rief
- Department of Psychology, Division of Clinical Psychology and Psychotherapy, Philipps University Marburg, Gutenbergstr. 18, 35032 Marburg, Germany
| | - Rolf-Detlef Treede
- Department of Neurophysiology, Centre for Biomedicine and Medical Technology Mannheim, Medical Faculty Mannheim, Heidelberg University, Ludolf-Krehl-Str. 13–17, 68167 Mannheim, Germany
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