M05.369
BillableRheumatoid heart disease with rheumatoid arthritis of unspecified knee
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 rheumatoid arthritis affects the knee (side not specified) and also causes inflammation of the heart tissue (rheumatoid heart disease).
Coding Tips
- •Use this code only when the specific knee affected cannot be determined from documentation
- •Query the provider to determine laterality when possible
Clinical Significance
This diagnosis represents a complex systemic manifestation of rheumatoid arthritis affecting both the cardiovascular system and knee joint when laterality is not specified. The combination of rheumatoid heart disease with large weight-bearing joint involvement indicates advanced inflammatory disease with significant impact on mobility, function, and cardiovascular health, requiring comprehensive management including cardiac monitoring and aggressive immunosuppression.
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 knee joint involvement without laterality specification
- ✓Clinical assessment of knee pain, swelling, and mobility 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
M05.361 — Same condition but specifically right knee (more specific when known)M05.362 — Same condition but specifically left knee (more specific when known)M17.9 — Osteoarthritis of knee, 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└M05.36Rheumatoid heart disease with rheumatoid arthritis of knee└M05.369Rheumatoid heart disease with rheumatoid arthritis of unspecified knee
└M05.369Rheumatoid heart disease with rheumatoid arthritis of unspecified knee