ICD-10 Code M06.031 – Rheumatoid arthritis without rheumatoid factor, right wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M06.031 – Rheumatoid arthritis without rheumatoid factor, right wrist
What it is
This code identifies rheumatoid arthritis that is seronegative for rheumatoid factor and specifically affects the right wrist. Use it when the record documents RA without rheumatoid factor involvement in that joint.
Clinical signs
Typical findings include chronic joint pain, swelling, stiffness, and reduced wrist motion. Clinical features vary; refer to documentation, and confirm the right wrist is the affected site.
When to use this code
Use this code when the provider documents rheumatoid arthritis without rheumatoid factor in the right wrist, including localized disease of that joint. It may also apply when the note clearly links seronegative RA to the right wrist and no more specific code is documented.
Check documentation if laterality is unclear or if the record describes multiple joints. Do not infer rheumatoid factor status or side from general arthritis wording alone.
Do not use for
Do not use this code for rheumatoid arthritis with rheumatoid factor, unspecified arthritis, or pain alone. Check documentation if the record does not specify the right wrist or seronegative status.
Coding tip
Verify both the rheumatoid factor status and laterality before assigning M06.031.