ICD-10 Code M05.612 – Rheumatoid arthritis of left shoulder with involvement of other organs and systems (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M05.612 – Rheumatoid arthritis of left shoulder with involvement of other organs and systems
What it is
This code identifies rheumatoid arthritis affecting the left shoulder, with documented involvement of other organs or systems. Use it when the record shows seropositive rheumatoid arthritis and extra-articular disease.
Clinical signs
Typical findings include chronic inflammatory joint pain, stiffness, swelling, and reduced shoulder motion. Clinical features vary; refer to documentation for evidence of systemic or organ involvement.
When to use this code
Use this code when the provider documents rheumatoid arthritis in the left shoulder and also notes involvement of another organ or body system. It is appropriate when the record clearly supports both the shoulder site and the systemic manifestation. Check documentation if the chart does not specify extra-articular disease.
Do not use for
Do not use this code for rheumatoid arthritis without documented organ or system involvement. Do not assign it if the condition is limited to another joint, or if the note only describes unspecified rheumatoid arthritis.
Coding tip
Verify both the left-shoulder site and the extra-articular involvement before coding.