We have provided a code set below to help you identify those patients with a lab in the JIA datasets. The anti-CCP positive/negative status is available via the following three LOINC codes: LOINC Code LOINC Name 53028-7 Cyclic citrullinated peptide Ab [Presence] in Serum 63375-0 Cyclic citrullinated peptide IgA+IgG Ab [Presence] in Serum 42898-7 Cyclic[…]
Yes, you can use age of onset. Juvenile PsA is defined as PsA with the age of onset < 16 years. Both the JIA PremiOM dataset and the PsA PremiOM dataset may be used. PsA PremiOM dataset: The following patients can be reasonably classified as juvenile PsA patients in the PsA PremiOM dataset. Patients who[…]
One can approach differentiating between these via diagnostic codes, supplemented with the joint counts. The diagnostic codes that directly refer to the polyarticular status and can be used as a proxy pcJIA are: ICD9: 714.30: Polyarticular juvenile rheumatoid arthritis, chronic or unspecified 714.31: Polyarticular juvenile rheumatoid arthritis, acute ICD10: M08.3 seronegative polyarthritis The above ICD10[…]
