Rheumatoid nodule, unspecified hand

This code identifies the presence of a rheumatoid nodule, a subcutaneous granuloma characteristic of rheumatoid arthritis, located on an unspecified hand. These firm, non-tender nodules typically develop over bony prominences or extensor surfaces in patients with seropositive rheumatoid arthritis.

Apply this code when documentation confirms a rheumatoid nodule is present on the hand, but the specific laterality (right or left) is not documented. This is appropriate for patients with a confirmed diagnosis of rheumatoid arthritis exhibiting this extra-articular manifestation.

• Avoid using this code if the laterality of the hand is specified; instead, use the more specific M06.341 (right hand) or M06.342 (left hand).
• Always code the underlying rheumatoid arthritis first, as the rheumatoid nodule is a manifestation of the systemic disease.
• Ensure the documentation clearly states "rheumatoid nodule" and its location on the hand, rather than other types of hand nodules.