M87.839
BillableOther osteonecrosis of unspecified carpus
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 the carpal bones (small bones in the wrist) when the specific side (left or right) is not documented or is unclear.
Coding Tips
- •Use only when laterality cannot be determined; query provider for clarification when possible
- •Review imaging studies to confirm carpal bone involvement and determine laterality
Clinical Significance
Unspecified carpus osteonecrosis represents a chronic condition affecting the small wrist bones with potential for severe functional impairment. This diagnosis is clinically significant for risk adjustment as it indicates complex orthopedic care needs and potential requirement for specialized surgical intervention.
Documentation Requirements
- ✓Documentation of osteonecrosis affecting the carpal bones
- ✓Specification that the condition is from causes other than idiopathic or traumatic
- ✓Evidence that laterality (right or left) is not specified or determinable
- ✓Advanced imaging confirming osteonecrosis in carpal bones
- ✓Clinical symptoms including wrist pain, stiffness, and functional limitations
- ✓Exclusion of infectious or drug-induced causes
- ✓Assessment of impact on wrist and hand function
- ✓Provider documentation of treatment complexity and monitoring needs
Commonly Confused Codes
M87.039 — Idiopathic aseptic necrosis of unspecified carpus - specifically idiopathic causeM87.837/M87.838 — Other osteonecrosis of right/left carpus - when laterality is actually documentedM86.839 — Other osteomyelitis, unspecified carpus - infectious condition rather than necrosisS62.109A — Fracture of unspecified carpal bone, unspecified wrist - acute trauma rather than chronic conditionM25.539 — Pain in unspecified wrist - symptom rather than specific bone pathology
Code Hierarchy
└M87Osteonecrosis└M87.8Other osteonecrosis└M87.83Other osteonecrosis of radius, ulna and carpus└M87.839Other osteonecrosis of unspecified carpus
└M87.839Other osteonecrosis of unspecified carpus