The original algorithm consisted of two criteria. Individuals meeting at least one were considered to have RA. Criterion 1: ≥1 RA Read code and a disease modifying antirheumatic drug (DMARD) without an alternative indication. Criterion 2: ≥2 RA Read codes, with at least one ‘strong’ code and no alternative diagnoses. Lists of codes for consultations and prescriptions were obtained from the authors of the original algorithm where these were available, or compiled based on the original description and clinical knowledge. 4161 people with a first Read code for RA between 1 January 2010 and 31 December 2012 were selected from the Clinical Practice Research Datalink (CPRD, successor to the GPRD), and the criteria applied.
Sara Muller, Samantha L Hider,Karim Raza, Rebecca J Stack, Richard A Hayward, Christian D Mallen, An algorithm to identify rheumatoid arthritis in primary care a Clinical Practice Research Datalink study. BMJ Open, 5(e009309), 2015.
| Code | Description | Entity type | Category | Coding System (Read) |
|---|---|---|---|---|
| J4...11 | Colitis - noninfective | res34: inflammatory_bowel_disease | diagnostic | Read |
| J4...12 | Inflammatory bowel disease | res34: inflammatory_bowel_disease | diagnostic | Read |
| J40..00 | Regional enteritis - Crohn's disease | res34: inflammatory_bowel_disease | diagnostic | Read |
| J40..11 | Crohn's disease | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400.00 | Regional enteritis of the small bowel | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400200 | Crohn's disease of the terminal ileum | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400300 | Crohn's disease of the ileum unspecified | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400400 | Crohn's disease of the ileum NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400500 | Exacerbation of Crohn's disease of small intestine | res34: inflammatory_bowel_disease | diagnostic | Read |
| J400z00 | Crohn's disease of the small bowel NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J401200 | Exacerbation of Crohn's disease of large intestine | res34: inflammatory_bowel_disease | diagnostic | Read |
| J401z00 | Crohn's disease of the large bowel NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J402.00 | Regional ileocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J40z.11 | Crohn's disease NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J41..11 | Mucous colitis and/or proctitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J41..12 | Ulcerative colitis and/or proctitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J410.00 | Ulcerative proctocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J410000 | Ulcerative ileocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J410100 | Ulcerative colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J410200 | Ulcerative rectosigmoiditis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J410z00 | Ulcerative proctocolitis NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J411.00 | Ulcerative (chronic) enterocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J412.00 | Ulcerative (chronic) ileocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J413.00 | Ulcerative pancolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J41y.00 | Other idiopathic proctocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J41yz00 | Other idiopathic proctocolitis NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J41z.00 | Idiopathic proctocolitis NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J43..00 | Other non-infective inflammatory gastroenteritis and colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J431200 | Toxic enterocolitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J431300 | Toxic colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J435.00 | Pouchitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J437.00 | Colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J438.00 | Left sided colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J4z2.00 | Non-infective ileitis NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J4z3.00 | Non-infective colitis NOS | res34: inflammatory_bowel_disease | diagnostic | Read |
| J4z5.00 | Exacerbation of non-infective colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
| J4z6.00 | Indeterminate colitis | res34: inflammatory_bowel_disease | diagnostic | Read |
To Export Phenotype Details:
| Format | API |
|---|---|
| XML | site_root/api/v1/public/phenotypes/PH596/version/1192/detail/?format=xml |
| JSON | site_root/api/v1/public/phenotypes/PH596/version/1192/detail/?format=json |
| R Package |
|
To Export Phenotype Code List:
| Format | API |
|---|---|
| XML | site_root/api/v1/public/phenotypes/PH596/version/1192/export/codes/?format=xml |
| JSON | site_root/api/v1/public/phenotypes/PH596/version/1192/export/codes/?format=json |
| CSV | site_root/phenotypes/PH596/version/1192/export/codes/ |
| R Package |
|
| Version ID |
Name | Owner | Publish date | |
|---|---|---|---|---|
| 1192 | Inflammatory Bowel Disease | ieuan.scanlon | 2021-10-06 | currently shown |
Export - export all codes into a csv file/JSON/XML for the current phenotype version.
Print - Print page.