We have provided a code set below to help you identify those patients with a lab in the PsA 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 citrullinated peptide IgG Ab [Presence] in Serum
  • The codes for rheumatoid factor (RF) are the following:
  • LOINC Code
  • LOINC Name
  • 33910-1
  • Rheumatoid factor [Presence] in Serum
  • 5297-7
  • Rheumatoid factor [Presence] in Serum by Latex agglutination
Category: Psoriatic Arthritis