M87.08
BillableIdiopathic aseptic necrosis of bone, other site
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 locations other than the head, pelvis, or extremities, occurring without a known cause.
Coding Tips
- •Use this code only when the affected bone site doesn't fit other M87.0 subcategories
- •Document the specific bone location in the medical record for clarity
Clinical Significance
Idiopathic aseptic necrosis of bone at other sites represents bone death without infection or known cause affecting locations not specifically categorized elsewhere, requiring specialized evaluation and management. This diagnosis indicates a serious condition that may require multidisciplinary care and ongoing monitoring for progression or complications.
Documentation Requirements
- ✓Specific anatomical site documentation (other than commonly coded locations)
- ✓Confirmation of aseptic nature (no infection)
- ✓Documentation that cause is idiopathic/unknown
- ✓Imaging evidence of bone necrosis at specified site
- ✓Clinical examination supporting osteonecrosis diagnosis
- ✓Exclusion of secondary causes (drugs, trauma, systemic conditions)
- ✓Assessment of functional impact from affected site
- ✓Treatment plan and response documentation
Commonly Confused Codes
M87.188 — Drug-induced osteonecrosis of other site (requires medication cause)M87.288 — Trauma-related osteonecrosis of other site (requires injury history)M87.388 — Other secondary osteonecrosis of other site (requires underlying condition)M86.8X — Osteomyelitis of other site (infectious process)M89.8X — Other specified disorders of bone (different pathology)
Code Hierarchy
└M87Osteonecrosis└M87.0Idiopathic aseptic necrosis of bone└M87.08Idiopathic aseptic necrosis of bone, other site
└M87.08Idiopathic aseptic necrosis of bone, other site