Nontraumatic ischemic infarction of muscle, unsp ank/ft

This code describes muscle tissue death in the ankle or foot due to a lack of blood supply, not caused by an injury. It signifies an infarction of the muscle in this specific anatomical region, where the underlying cause is ischemia rather than trauma.

Use this code when documentation clearly indicates a diagnosis of nontraumatic ischemic infarction affecting the muscles of the ankle or foot, and the specific ankle or foot (right or left) is not specified. This typically applies when imaging or biopsy confirms muscle necrosis due to vascular insufficiency without an acute traumatic event.

• Ensure documentation specifies "nontraumatic" and "ischemic" to differentiate from other causes of muscle damage.
• Avoid using this code if the laterality (right or left ankle/foot) is documented; instead, select the more specific M62.271 or M62.272.
• Always code the underlying cause of the ischemia (e.g., peripheral artery disease, embolism) as a primary or secondary diagnosis.