ICD-10 Code M05.74 – Rheumatoid arthritis with rheumatoid factor of hand without organ or systems involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.74 – Rheumatoid arthritis with rheumatoid factor of hand without organ or systems involvement
What it is
This code identifies rheumatoid arthritis affecting the hand in a patient who has rheumatoid factor, with no documented involvement of other organs or body systems. Use it when the record specifies the hand location and excludes systemic disease.
Clinical signs
Typical findings include inflammatory hand joint pain, swelling, stiffness, and reduced range of motion. Clinical features vary; refer to documentation, and confirm that rheumatoid factor positivity is documented.
When to use this code
Use this code when the provider documents rheumatoid arthritis of the hand and notes rheumatoid factor, but does not describe extra-articular or systemic involvement. It is appropriate for hand-only disease in the current encounter or problem list. Check documentation if laterality or extent is unclear.
Do not use for
Do not use this code if the record describes rheumatoid arthritis without rheumatoid factor, another joint site, or organ/system involvement. Check documentation when the hand is not specifically identified.
Coding tip
Verify both the rheumatoid factor status and the anatomic site before assigning M05.74.