ICD-10 Code M06.03 – Rheumatoid arthritis without rheumatoid factor, wrist (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M06.03 – Rheumatoid arthritis without rheumatoid factor, wrist
What it is
This code identifies rheumatoid arthritis affecting the wrist when rheumatoid factor is not present. Use it for documented seronegative rheumatoid arthritis limited to, or specifically involving, the wrist.
Clinical signs
Typical findings include wrist pain, swelling, stiffness, and reduced range of motion. Clinical features vary; refer to documentation, especially when the record confirms rheumatoid arthritis without rheumatoid factor.
When to use this code
Use this code when the provider documents rheumatoid arthritis without rheumatoid factor and specifies the wrist as the affected site. It also fits cases where the wrist is the named joint in a confirmed seronegative rheumatoid arthritis diagnosis. Check documentation if multiple joints are involved.
Do not use for
Do not use this code for rheumatoid arthritis with positive rheumatoid factor, or when the wrist involvement is not documented. Do not guess the site or serologic status; check documentation.
Coding tip
Confirm both the seronegative status and the wrist site in the assessment before assigning M06.03.