M06.371

Billable

Rheumatoid nodule, right ankle and foot

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 develops in or around the right ankle or foot.

Coding Tips

•This code specifies the right side; use M06.372 for left-sided nodules and M06.379 when laterality is unspecified
•Document whether the nodule is on the ankle, foot, or both to ensure accurate coding of this extra-articular manifestation

Clinical Significance

Rheumatoid nodules in the right ankle and foot area represent advanced rheumatoid arthritis with significant functional implications for ambulation and weight-bearing. These manifestations indicate active systemic inflammation and often correlate with more severe disease progression requiring intensive treatment.

Documentation Requirements

✓Established rheumatoid arthritis diagnosis with supporting criteria
✓Physical examination confirming nodule presence in right ankle/foot region
✓Specific anatomical description within ankle or foot structures
✓Nodule characteristics documented (size, consistency, mobility)
✓Assessment of impact on gait, weight-bearing, and functional mobility
✓Laboratory findings consistent with active rheumatoid disease
✓Treatment plan addressing nodular disease and functional limitations
✓Exclusion of other causes of ankle/foot nodules or masses

Commonly Confused Codes

M06.372 — Rheumatoid nodule, left ankle and foot (incorrect laterality)M06.379 — Rheumatoid nodule, unspecified ankle and foot (when laterality is documented)M79.3 — Panniculitis, unspecified (non-rheumatoid subcutaneous nodule)M25.571 — Pain in right ankle (symptom without nodule documentation)M05.771 — Rheumatoid arthritis with rheumatoid factor of right ankle and foot (RA without nodule)

Code Hierarchy

└M06Other rheumatoid arthritis └M06.3Rheumatoid nodule └M06.37Rheumatoid nodule, ankle and foot └M06.371Rheumatoid nodule, right ankle and foot

└M06.371Rheumatoid nodule, right ankle and foot