ICD-10 Code M06.21 – Rheumatoid bursitis, shoulder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code M06.21 – Rheumatoid bursitis, shoulder
What it is
M06.21 identifies rheumatoid bursitis affecting the shoulder bursa. Use it when inflammation of a shoulder bursa is documented as related to rheumatoid arthritis.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include shoulder pain, swelling, tenderness, and reduced range of motion when bursitis is active.
When to use this code
Use this code when the provider documents rheumatoid bursitis in the shoulder, or when the shoulder bursa inflammation is clearly linked to rheumatoid arthritis. It may be used with additional rheumatoid arthritis codes if the record supports both conditions.
Do not use for
Do not use it for nonrheumatoid shoulder bursitis or unspecified shoulder pain. Check documentation if the bursitis is traumatic, infectious, or not clearly tied to rheumatoid disease.
Coding tip
Confirm both the shoulder site and the rheumatoid cause are documented before assigning M06.21.