ICD-10 Code M06.05 – Rheumatoid arthritis without rheumatoid factor, hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M06.05 – Rheumatoid arthritis without rheumatoid factor, hip
What it is
M06.05 identifies rheumatoid arthritis affecting the hip when rheumatoid factor is not documented. It tells you the disease is inflammatory and joint-specific, with the hip as the coded site.
Clinical signs
Typical findings include persistent hip pain, stiffness, swelling, and reduced range of motion. Clinical features vary; refer to documentation for confirmation of rheumatoid arthritis and the involved joint.
When to use this code
Use this code when the provider documents rheumatoid arthritis without rheumatoid factor and specifies the hip. It is appropriate for encounters focused on that joint involvement, including evaluation, follow-up, or problem-list documentation. Check documentation if laterality or additional joint details are unclear.
Do not use for
Do not use it for rheumatoid arthritis with rheumatoid factor, or when the hip is not specified. Avoid this code if the record only says inflammatory arthritis or another arthritis type without confirming the diagnosis.
Coding tip
Code only after the note clearly links rheumatoid arthritis, negative rheumatoid factor, and the hip.