M87.266
BillableOsteonecrosis due to previous trauma, unspecified fibula
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 smaller bone of the lower leg (fibula) caused by previous trauma, but the specific side (left or right) is not specified or documented.
Coding Tips
- •Use only when laterality cannot be determined from available documentation; attempt to obtain clarification from provider
- •This unspecified code is less preferred; strive to code to the most specific laterality when possible
Clinical Significance
Unspecified fibular osteonecrosis following trauma represents bone death in the lateral support structure of the lower leg, which can affect ankle stability and gait mechanics. This condition requires ongoing orthopedic monitoring and may impact overall lower extremity function.
Documentation Requirements
- ✓Documentation of fibula involvement without specified laterality
- ✓Clear history of previous trauma to lower leg area
- ✓Evidence of bone necrosis in fibular structures
- ✓Justification for unspecified laterality (bilateral involvement or unclear documentation)
- ✓Assessment of ankle stability and function
- ✓Current pain levels and mobility status
- ✓Treatment modalities and effectiveness
- ✓Impact on gait and weight-bearing capacity
Commonly Confused Codes
M87.264 — Osteonecrosis due to previous trauma, right fibula (when laterality is documented)M87.265 — Osteonecrosis due to previous trauma, left fibula (when laterality is documented)M87.263 — Osteonecrosis due to previous trauma, unspecified tibia (different bone)M87.366 — Other secondary osteonecrosis, unspecified fibula (non-traumatic cause)M84.369A — Stress fracture, unspecified fibula (acute injury, not chronic necrosis)