ICD-10 Code M02.85 – Other reactive arthropathies, hip (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M02.85 – Other reactive arthropathies, hip
What it is
M02.85 identifies a reactive arthropathy affecting the hip. Use it when the record shows a post-infectious or other reactive joint inflammation in the hip, and the documentation does not specify a more exact reactive arthritis code.
Clinical signs
Typical findings include hip pain, stiffness, and reduced range of motion after a recent infection or inflammatory trigger. Clinical features vary; refer to documentation.
When to use this code
Use M02.85 when the provider documents reactive arthropathy or reactive arthritis involving the hip and names the site as the hip. It is appropriate when the condition is localized to the hip and no more specific code is documented. Check documentation if the note only says arthritis, joint pain, or post-infectious arthropathy without hip involvement.
Do not use for
Do not use this code for septic arthritis, osteoarthritis, or unspecified hip pain. If the diagnosis is another inflammatory arthropathy or the site is not clearly the hip, choose the documented condition.
Coding tip
Confirm both the reactive arthropathy diagnosis and the hip site in the provider note before assigning M02.85.