M05.649
BillableRheumatoid arthritis of unspecified hand with involvement of other organs and systems
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 hand with systemic complications involving other organs or body systems.
Coding Tips
- •Use this code only when hand laterality cannot be determined from documentation; attempt to clarify left vs. right before coding.
- •Document associated systemic manifestations such as rheumatoid nodules, vasculitis, or organ involvement for complete coding.
Clinical Significance
Represents rheumatoid arthritis of unspecified hand with involvement of other organs and systems, indicating severe systemic inflammatory disease with extra-articular manifestations. This diagnosis reflects complex RA with multi-organ involvement requiring comprehensive medical management and ongoing monitoring for disease progression.
Documentation Requirements
- ✓Confirmed rheumatoid arthritis diagnosis meeting established criteria
- ✓Hand joint involvement without laterality specification
- ✓Documentation of extra-articular organ system involvement
- ✓Evidence of systemic complications affecting other organs
- ✓Laboratory markers demonstrating systemic inflammatory disease
- ✓Specialist evaluations documenting multi-system involvement
- ✓Assessment of functional capacity and disability level
- ✓Physician documentation establishing RA-systemic disease relationship
Commonly Confused Codes
Code Hierarchy
└M05Rheumatoid arthritis with rheumatoid factor└M05.6Rheumatoid arthritis with involvement of other organs and systems└M05.64Rheumatoid arthritis of hand with involvement of other organs and systems└M05.649Rheumatoid arthritis of unspecified hand with involvement of other organs and systems
└M05.649Rheumatoid arthritis of unspecified hand with involvement of other organs and systems