M87.00
BillableIdiopathic aseptic necrosis of unspecified bone
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 without infection in an unspecified bone location, occurring without a known cause.
Coding Tips
- •This is a non-specific code; use more specific codes when the affected bone location is documented
- •Verify if the necrosis is idiopathic or secondary to trauma, radiation, or other causes before coding
Clinical Significance
Idiopathic aseptic necrosis represents death of bone tissue without infection, often requiring surgical intervention and long-term orthopedic management. This condition significantly impacts patient mobility and quality of life, frequently progressing to joint collapse without appropriate treatment.
Documentation Requirements
- ✓Documentation of aseptic or avascular necrosis of bone
- ✓Confirmation that etiology is idiopathic (unknown cause)
- ✓Imaging evidence (MRI, X-ray, or bone scan) showing bone necrosis
- ✓Exclusion of infectious causes of bone necrosis
- ✓Specification of bone location when documented
- ✓Staging of disease progression when available
- ✓Treatment plan including surgical or conservative management
- ✓Functional impact assessment and limitations
Commonly Confused Codes
M87.1X — Osteonecrosis due to drugs when medication-inducedM87.2X — Osteonecrosis due to previous trauma when trauma history existsM87.3X — Other secondary osteonecrosis when underlying cause identifiedM86.XX — Osteomyelitis when infection is presentM87.0X (specific location) — When anatomical site is documented
Code Hierarchy
└M87Osteonecrosis└M87.0Idiopathic aseptic necrosis of bone└M87.00Idiopathic aseptic necrosis of unspecified bone
└M87.00Idiopathic aseptic necrosis of unspecified bone