Rheumatoid nodule, unspecified wrist

This code signifies the presence of a rheumatoid nodule, a subcutaneous granulomatous lesion, specifically located on an unspecified wrist. These nodules are a common extra-articular manifestation of rheumatoid arthritis, often firm and non-tender.

Apply this code when documentation clearly indicates a rheumatoid nodule affecting the wrist, but the specific laterality (right or left) is not specified. This is appropriate when the physician's notes confirm the diagnosis of a rheumatoid nodule and its anatomical location without further detail on the side.

• Ensure documentation specifies "rheumatoid nodule" and not just a general "nodule" or "lump" on the wrist.
• If laterality (right or left wrist) is documented, use the more specific M06.331 (right) or M06.332 (left) codes.
• Always code the underlying rheumatoid arthritis (e.g., M05.xx or M06.xx) as the primary diagnosis, with the rheumatoid nodule as a secondary diagnosis.