Rheumatoid nodule, right knee

This code signifies the presence of a rheumatoid nodule, a subcutaneous granuloma characteristic of rheumatoid arthritis, specifically located on the right knee. These nodules are typically firm, non-tender, and can occur in various sizes, often over pressure points.

Use this code when documentation clearly identifies a rheumatoid nodule on the patient's right knee. This diagnosis is typically made through physical examination and is often associated with a confirmed diagnosis of rheumatoid arthritis.

• Ensure the documentation specifies "right knee" to support this laterality.
• Always code the underlying rheumatoid arthritis (e.g., M05.xx or M06.xx) as the primary diagnosis, with the nodule as a secondary condition.
• Avoid using unspecified nodule codes if the specific location and etiology (rheumatoid) are known.