ICD-10 Code M05.60 – Rheumatoid arthritis of unspecified site with involvement of other organs and systems (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.60 – Rheumatoid arthritis of unspecified site with involvement of other organs and systems
What it is
This code identifies rheumatoid arthritis at an unspecified joint site, with documented involvement of other organs or systems. Use it when the record confirms systemic rheumatoid disease but does not name a specific joint location.
Clinical signs
Findings may include inflammatory joint pain, stiffness, swelling, and evidence of extra-articular disease. Clinical features vary; refer to documentation for the specific organ or system involved.
When to use this code
Use this code when the provider documents rheumatoid arthritis with systemic involvement and does not specify the affected site. It is appropriate when the chart supports extra-articular disease, such as organ or system involvement, but the joint location remains unspecified.
Check documentation if the note only says “rheumatoid arthritis” without systemic involvement, or if a more specific rheumatoid arthritis code is available. You should code the documented site when it is named.
Do not use for
Do not use this code for rheumatoid arthritis without organ or system involvement, or when a specific joint site is documented. Check documentation for seropositive or seronegative details that may require a different code.
Coding tip
Code the systemic involvement only when it is clearly documented, and choose the most specific rheumatoid arthritis code available.