ICD-10 Code M06.051 – Rheumatoid arthritis without rheumatoid factor, right hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M06.051 – Rheumatoid arthritis without rheumatoid factor, right hip
What it is
This code identifies rheumatoid arthritis affecting the right hip when rheumatoid factor is not documented or is absent. Use it for inflammatory arthritis in that joint, not for unspecified hip pain.
Clinical signs
Typical findings include joint pain, stiffness, swelling, and reduced range of motion in the right hip. Clinical features vary; refer to documentation for laterality and whether rheumatoid factor testing supports the diagnosis.
When to use this code
Use M06.051 when the record clearly states rheumatoid arthritis without rheumatoid factor and specifies the right hip. It is appropriate for office notes, specialist assessments, imaging impressions, or problem lists that document this exact condition. Check documentation if the diagnosis is only suspected.
Do not use for
Do not use this code for rheumatoid arthritis with rheumatoid factor, unspecified rheumatoid arthritis, or non-rheumatoid hip pain. If the side is not right, or the chart does not confirm the diagnosis, check documentation.
Coding tip
Verify both the serology wording and the laterality before assigning the code.