M87.849
BillableOther osteonecrosis, unspecified 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 finger(s) when the specific hand (left or right) is not documented or cannot be determined.
Coding Tips
- •Use only when laterality is truly unspecified; query provider for clarification when possible
- •Review imaging reports which may indicate side-specific involvement
Clinical Significance
Unspecified finger osteonecrosis represents a chronic bone condition with potential for functional disability and ongoing care requirements. This diagnosis is significant for risk adjustment as it indicates complex orthopedic management needs and potential requirement for specialized interventions.
Documentation Requirements
- ✓Documentation of osteonecrosis affecting finger bones (phalanges)
- ✓Specification that the condition is from causes other than idiopathic or traumatic
- ✓Evidence that laterality (right or left) is not specified or cannot be determined
- ✓Imaging studies confirming bone necrosis in finger structures
- ✓Clinical symptoms including finger pain, stiffness, and functional impairment
- ✓Exclusion of infectious or drug-induced causes
- ✓Assessment of impact on hand function and activities of daily living
- ✓Provider documentation of treatment approach and monitoring needs
Commonly Confused Codes
M87.049 — Idiopathic aseptic necrosis of unspecified finger(s) - specifically idiopathic causeM87.844/M87.845 — Other osteonecrosis of right/left finger(s) - when laterality is actually documentedM86.849 — Other osteomyelitis, unspecified finger(s) - infectious condition rather than necrosisS62.609A — Fracture of unspecified phalanx of unspecified finger - acute trauma rather than chronic conditionM20.019 — Mallet finger of unspecified finger(s) - tendon injury rather than bone necrosis
Code Hierarchy
└M87Osteonecrosis└M87.8Other osteonecrosis└M87.84Other osteonecrosis, hand and fingers└M87.849Other osteonecrosis, unspecified finger(s)
└M87.849Other osteonecrosis, unspecified finger(s)