ICD-10 Code M05.739 – Rheumatoid arthritis with rheumatoid factor of unspecified wrist without organ or systems involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.739 – Rheumatoid arthritis with rheumatoid factor of unspecified wrist without organ or systems involvement
What it is
This code identifies rheumatoid arthritis affecting an unspecified wrist, with a positive rheumatoid factor and no documented organ or system involvement. Use it when the record names the wrist but does not specify right or left.
Clinical signs
Typical findings include chronic inflammatory wrist pain, swelling, stiffness, and reduced range of motion. Clinical features vary; refer to documentation for laterality, rheumatoid factor status, and whether extra-articular disease is present.
When to use this code
Use this code when the clinician documents rheumatoid arthritis with rheumatoid factor in an unspecified wrist and does not mention organ or systemic involvement. It also fits follow-up visits when the diagnosis remains active and the wrist laterality is still not stated.
Do not use for
Do not use this code if the wrist is documented as right or left, because a more specific code exists. Do not use it when rheumatoid factor is negative or when organ or system involvement is reported; check documentation.
Coding tip
Query for laterality and any extra-articular involvement before assigning M05.739.