M05.379
BillableRheumatoid heart disease 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
Rheumatoid arthritis affecting an unspecified ankle or foot combined with inflammation of the heart tissue caused by rheumatoid disease.
Coding Tips
- •Use this code only when the specific ankle or foot (left vs right) is not documented
- •Ensure documentation clearly indicates rheumatoid heart disease is present alongside the arthritis
Clinical Significance
This diagnosis represents a complex systemic manifestation of rheumatoid arthritis affecting both the cardiovascular system and ankle/foot complex when laterality is not specified. The combination of rheumatoid heart disease with lower extremity involvement indicates advanced inflammatory disease with significant impact on weight-bearing function and cardiovascular health, requiring comprehensive management including cardiac monitoring and aggressive disease-modifying therapy.
Documentation Requirements
- ✓Confirmed diagnosis of rheumatoid arthritis with positive serology (RF or anti-CCP)
- ✓Evidence of cardiac involvement such as pericarditis, myocarditis, or valvular disease
- ✓Documentation of ankle and/or foot joint involvement without laterality specification
- ✓Clinical assessment of ankle/foot pain, swelling, and functional limitations
- ✓Echocardiogram or other cardiac imaging showing rheumatoid heart disease
- ✓Laboratory evidence of systemic inflammation (elevated ESR, CRP)
- ✓Documentation of chronicity and ongoing disease activity
- ✓Treatment with DMARDs or biologic agents
Commonly Confused Codes
M05.371 — Same condition but specifically right ankle/foot (more specific when known)M05.372 — Same condition but specifically left ankle/foot (more specific when known)M19.07 — Osteoarthritis of ankle and foot, unspecified (different etiology, no cardiac involvement)M06.9 — Rheumatoid arthritis, unspecified (no heart involvement documented)
Code Hierarchy
└M05Rheumatoid arthritis with rheumatoid factor└M05.3Rheumatoid heart disease with rheumatoid arthritis└M05.37Rheumatoid heart disease with rheumatoid arthritis of ankle and foot└M05.379Rheumatoid heart disease with rheumatoid arthritis of unspecified ankle and foot
└M05.379Rheumatoid heart disease with rheumatoid arthritis of unspecified ankle and foot