Osteonecrosis (M87) ICD-10-CM

About the M87 Code Range

The ICD-10 code category M87 covers various types of osteonecrosis, a condition characterized by bone tissue death due to inadequate blood supply. These codes are used to specify osteonecrosis by cause—such as idiopathic, drug-induced, or trauma-related—and by precise bone locations throughout the body.

M87 codes help healthcare professionals and coders document osteonecrosis accurately by distinguishing common synonyms and specific affected sites. For example, idiopathic aseptic necrosis of bone is coded under M87.0, while drug-induced osteonecrosis, including cases caused by steroids or bisphosphonates (notably jaw osteonecrosis), falls under M87.1. Trauma-related osteonecrosis, such as bone death resulting from previous injury, uses codes starting with M87.2. Other secondary osteonecrosis, linked to conditions like alcohol use or dialysis, is captured under M87.3. The codes further specify by body part and laterality, aiding detailed clinical and billing documentation. Common terms like "osteonecrosis of femur," "avascular necrosis," or "osteoradionecrosis" map to these precise codes, ensuring clarity in medical records and claim submissions. This structured system supports accurate reporting of osteonecrosis in different bones including shoulders, hands, pelvis, and lower limbs, reflecting its varied clinical presentations.