M05.279
BillableRheumatoid vasculitis with rheumatoid arthritis of unspecified ankle and foot
HCC Category Mapping
V28HCC 93 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.175V24HCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.307ESRDHCC 40 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000RxHCCHCC 83 — Rheumatoid Arthritis and Inflammatory Connective Tissue Disease
0.000What This Code Means
A condition where blood vessel inflammation occurs alongside rheumatoid arthritis affecting the ankle and foot, but the specific side is not specified.
Coding Tips
- •Use this code only when documentation does not clearly indicate right or left involvement
- •Query provider for laterality information to ensure accurate coding
Clinical Significance
Represents advanced rheumatoid arthritis with life-threatening vasculitic involvement of the ankle and foot complex, though specific laterality is not documented. This condition indicates severe systemic inflammatory disease requiring intensive treatment and monitoring for both joint destruction and systemic complications.
Documentation Requirements
- ✓Established rheumatoid arthritis with confirmatory serology
- ✓Documentation of rheumatoid vasculitis through clinical or tissue evidence
- ✓Ankle and foot involvement noted without laterality specification
- ✓Active inflammatory markers supporting systemic disease
- ✓Assessment of ankle/foot function and structural changes
- ✓Evaluation of other organ system involvement
- ✓Treatment documentation with immunosuppressive agents
- ✓Regular disease activity and functional status monitoring
Commonly Confused Codes
M05.271 — Right ankle and foot when laterality should be specifiedM05.272 — Left ankle and foot when laterality should be specifiedM05.269 — Unspecified knee instead of ankle/footM06.879 — Other RA of unspecified ankle and foot without vasculitisI77.6 — Vasculitis without rheumatoid arthritis context
Code Hierarchy
└M05Rheumatoid arthritis with rheumatoid factor└M05.2Rheumatoid vasculitis with rheumatoid arthritis└M05.27Rheumatoid vasculitis with rheumatoid arthritis of ankle and foot└M05.279Rheumatoid vasculitis with rheumatoid arthritis of unspecified ankle and foot
└M05.279Rheumatoid vasculitis with rheumatoid arthritis of unspecified ankle and foot