M05.042
BillableFelty's syndrome, left hand
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
Felty's syndrome affecting the left hand, a condition combining rheumatoid arthritis with an enlarged spleen and low white blood cell count.
Coding Tips
- •This code specifies left hand involvement; do not use if right hand or bilateral involvement is documented
- •Confirm documentation supports Felty's syndrome diagnosis including systemic manifestations beyond joint involvement
Clinical Significance
Felty's syndrome involving the left hand creates a devastating combination of functional disability and immune compromise that requires urgent and comprehensive care. Hand involvement severely impacts daily activities while the associated neutropenia and splenomegaly create life-threatening infection risks demanding specialized management protocols.
Documentation Requirements
- ✓Clear documentation of rheumatoid arthritis specifically affecting the left hand
- ✓Clinical or imaging evidence of splenomegaly
- ✓Laboratory confirmation of neutropenia with quantitative white cell counts
- ✓Left hand laterality explicitly documented
- ✓Assessment of hand function and dexterity limitations
- ✓Infection screening and immune status evaluation
- ✓Treatment regimen including immunomodulatory agents
- ✓Occupational therapy and adaptive equipment needs documentation
Commonly Confused Codes
M05.041 — Same condition but affecting right hand instead of leftM05.9 — Seropositive rheumatoid arthritis without the complete Felty's triadM06.9 — Rheumatoid arthritis unspecified without hematologic involvementD70.4 — Cyclic neutropenia without rheumatoid arthritis contextM79.3 — Panniculitis when interpreting hand inflammation incorrectly
Code Hierarchy
└M05Rheumatoid arthritis with rheumatoid factor└M05.0Felty's syndrome└M05.04Felty's syndrome, hand└M05.042Felty's syndrome, left hand
└M05.042Felty's syndrome, left hand