ICD-10 Code M05.731 – Rheumatoid arthritis with rheumatoid factor of right wrist without organ or systems involvement (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.731 – Rheumatoid arthritis with rheumatoid factor of right wrist without organ or systems involvement
What it is
This code identifies rheumatoid arthritis affecting the right wrist, with rheumatoid factor documented and no organ or body-system involvement. Use it when the record specifies this exact joint and confirms the seropositive form.
Clinical signs
Typical findings include chronic inflammatory joint pain, swelling, stiffness, and reduced wrist motion. Clinical features vary; refer to documentation for serologic evidence of rheumatoid factor and confirmation that no extra-articular involvement is present.
When to use this code
Use this code when the provider documents rheumatoid arthritis with rheumatoid factor in the right wrist only. It also fits encounters for established disease follow-up, assessment, or monitoring when the right wrist is the coded site and systemic involvement is absent.
Check documentation if laterality, seropositive status, or the affected joint is unclear. If the record describes more than one joint or organ involvement, you may need a different code.
Do not use for
Do not use this code for rheumatoid arthritis without rheumatoid factor, unspecified wrist involvement, or disease affecting another joint. Do not use it when organ or systems involvement is documented.
Coding tip
Verify both laterality and serologic status in the note before assigning M05.731.