M06.361

Billable

Rheumatoid nodule, right knee

HCC Category Mapping

V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.175

V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.307

ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease

0.000

What This Code Means

A firm, non-cancerous nodule associated with rheumatoid arthritis that has developed on the right knee.

Coding Tips

•Verify the nodule is located at the knee joint and not the lower leg or thigh
•Confirm right knee is documented in the clinical assessment

Clinical Significance

Rheumatoid nodules represent a more severe manifestation of rheumatoid arthritis and indicate active inflammatory disease with potential for systemic complications. These nodules typically occur in patients with positive rheumatoid factor and suggest higher disease activity requiring aggressive treatment management.

Documentation Requirements

✓Confirmation of rheumatoid arthritis diagnosis
✓Physical examination documenting presence of palpable nodule
✓Specific anatomical location (right knee) clearly identified
✓Size, consistency, and mobility of nodule described
✓Inflammatory markers or rheumatoid factor status when available
✓Assessment of functional impact on joint mobility
✓Treatment response or management plan documented
✓Differentiation from other types of nodules or masses

Commonly Confused Codes

M79.3 — Panniculitis, unspecified (subcutaneous nodule without rheumatoid arthritis)M06.30 — Rheumatoid nodule, unspecified site (when specific location not documented)M06.362 — Rheumatoid nodule, left knee (incorrect laterality)M25.51 — Pain in right knee (symptom without nodule documentation)M05.761 — Rheumatoid arthritis with rheumatoid factor of right knee without nodule (RA without nodule present)

Code Hierarchy

└M06Other rheumatoid arthritis └M06.3Rheumatoid nodule └M06.36Rheumatoid nodule, knee └M06.361Rheumatoid nodule, right knee

└M06.361Rheumatoid nodule, right knee