M90.59
BillableOsteonecrosis in diseases classified elsewhere, multiple sites
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
Bone death (osteonecrosis) affecting multiple bone sites caused by another disease. The bone tissue dies in several locations as a secondary effect of an underlying condition.
Coding Tips
- •Use this code when osteonecrosis is documented in multiple sites rather than a single location
- •Always pair with a secondary diagnosis code for the underlying disease causing the osteonecrosis
Clinical Significance
Secondary osteonecrosis affecting multiple anatomical sites represents widespread bone death caused by an underlying systemic disease, indicating severe medical complexity. This diagnosis has major risk adjustment implications due to extensive functional limitations and intensive care coordination requirements.
Documentation Requirements
- ✓Documentation of underlying classified disease causing widespread osteonecrosis
- ✓Clear evidence of bone necrosis affecting multiple anatomical sites
- ✓Imaging studies confirming osteonecrotic changes in multiple locations
- ✓Clinical correlation between systemic disease and multifocal bone death
- ✓Comprehensive treatment plan addressing systemic condition and multiple sites
- ✓Assessment of cumulative functional impact from multiple site involvement
- ✓Provider documentation confirming secondary nature and multiple site involvement
- ✓Monitoring plan for progression and treatment response across sites
Commonly Confused Codes
M87.09 — Primary osteonecrosis of multiple sites, not secondary to diseaseM90.58 — Same condition but affecting single other site rather than multiple sitesM86.19 — Chronic osteomyelitis of multiple sites involving infectionM89.09 — Other specified disorders of bone affecting multiple sitesM85.89 — Other specified disorders of bone density affecting multiple sites
Code Hierarchy
└M90Osteopathies in diseases classified elsewhere└M90.5Osteonecrosis in diseases classified elsewhere└M90.59Osteonecrosis in diseases classified elsewhere, multiple sites
└M90.59Osteonecrosis in diseases classified elsewhere, multiple sites