Other osteonecrosis of left radius

This code signifies the death of bone tissue in the left radius due to a loss of blood supply, not otherwise specified as a specific type of osteonecrosis. This condition can lead to pain, joint collapse, and arthritis if left untreated. It represents a non-traumatic, non-infectious bone infarction.

Use this code when documentation clearly indicates osteonecrosis of the left radius, and the specific type (e.g., aseptic, post-traumatic) is not identified or is described as "other." Supporting documentation would include imaging reports (X-ray, MRI) showing bone necrosis, and physician notes detailing the location and nature of the condition.

• Ensure the documentation specifies "left radius" to avoid laterality errors.
• Differentiate from osteomyelitis (infection) or fracture nonunion, which have distinct codes.
• Always look for more specific osteonecrosis codes (e.g., M87.1x, M87.2x) before defaulting to "other."