M87.845
BillableOther osteonecrosis, left finger(s)
HCC Category Mapping
V28HCC 92 — Bone/Joint/Muscle Infections/Necrosis
0.209V24HCC 39 — Bone/Joint/Muscle Infections/Necrosis
0.482ESRDHCC 39 — Bone/Joint/Muscle Infections/Necrosis
0.000RxHCCHCC 80 — Bone/Joint/Muscle Infections/Necrosis
0.000What This Code Means
Death of bone tissue in one or more fingers of the left hand due to interrupted blood supply.
Coding Tips
- •Confirm left-sided involvement in documentation to avoid miscoding as right or bilateral
- •Note the number and specific fingers affected for complete clinical documentation
Clinical Significance
Left finger osteonecrosis represents a chronic condition that can significantly impact hand function and quality of life. This diagnosis has important risk adjustment implications as it indicates ongoing orthopedic care needs and potential requirement for specialized surgical intervention, with particular significance if affecting the dominant hand.
Documentation Requirements
- ✓Clear specification of osteonecrosis affecting left finger bones
- ✓Documentation that the condition results from causes other than idiopathic or drug-related
- ✓Imaging evidence confirming bone necrosis in left finger(s)
- ✓Clinical presentation including left finger pain, dysfunction, and mobility limitations
- ✓Exclusion of infectious or traumatic etiologies
- ✓Assessment of impact on hand dominance and functional capacity
- ✓Documentation of specific fingers affected when known
- ✓Provider evaluation of treatment complexity and rehabilitation needs
Commonly Confused Codes
M87.045 — Idiopathic aseptic necrosis of left finger(s) - specifically idiopathic etiologyM87.049 — Idiopathic aseptic necrosis of unspecified finger(s) - different cause and lacks lateralityM86.845 — Other osteomyelitis, left finger(s) - infectious bone disease rather than necrosisS62.602A — Fracture of unspecified phalanx of left index finger - acute injury rather than chronic necrosisM20.012 — Mallet finger of left finger(s) - tendon condition rather than bone necrosis
Code Hierarchy
└M87Osteonecrosis└M87.8Other osteonecrosis└M87.84Other osteonecrosis, hand and fingers└M87.845Other osteonecrosis, left finger(s)
└M87.845Other osteonecrosis, left finger(s)