M87.376
BillableOther secondary osteonecrosis, unspecified foot
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 foot caused by an underlying condition or treatment, with the side not specified.
Coding Tips
- •Attempt to obtain laterality from provider documentation; use specific right or left code when possible
- •Ensure the secondary cause is clearly documented in the medical record
Clinical Significance
This diagnosis represents secondary osteonecrosis of the foot when laterality is not specified, caused by underlying conditions that can significantly impact weight-bearing and ambulation. It requires identification of the causative factor and monitoring for progression.
Documentation Requirements
- ✓Documentation of osteonecrosis affecting foot without side specification
- ✓Identification of underlying cause (e.g., corticosteroid use, radiation therapy, diabetes complications)
- ✓Imaging findings confirming foot bone necrosis
- ✓Clinical symptoms such as foot pain, swelling, or difficulty walking
- ✓Functional limitations affecting ambulation
- ✓Duration and progression of condition
- ✓Treatment history and response
- ✓Reason why laterality cannot be determined or if bilateral involvement
Commonly Confused Codes
M87.374 — Other secondary osteonecrosis, right foot (when laterality is known)M87.375 — Other secondary osteonecrosis, left foot (when laterality is known)M86.179 — Chronic osteomyelitis of unspecified foot (infection vs necrosis)S92.909A — Unspecified fracture of unspecified foot (acute fracture vs necrosis)M87.379 — Other secondary osteonecrosis, unspecified toe(s) (foot vs toe specificity)
Code Hierarchy
└M87Osteonecrosis└M87.3Other secondary osteonecrosis└M87.37Other secondary osteonecrosis, ankle and foot└M87.376Other secondary osteonecrosis, unspecified foot
└M87.376Other secondary osteonecrosis, unspecified foot