Nontraumatic ischemic infarction of muscle, unsp upper arm

This code signifies muscle tissue death in the upper arm due to a lack of blood supply, not caused by an injury. This condition is also known as Volkmann's ischemic contracture when it affects the forearm and hand, but this specific code refers to the upper arm. The muscle tissue becomes necrotic due to insufficient oxygen and nutrients.

Use this code when documentation clearly indicates an ischemic infarction of the upper arm muscle that is not attributed to trauma. This diagnosis is often supported by imaging studies (e.g., MRI) showing muscle necrosis and clinical findings consistent with impaired blood flow. It is appropriate when the specific laterality (left or right) of the upper arm is not documented.

• Ensure documentation explicitly states "nontraumatic" and "ischemic infarction" of the muscle.
• Avoid using this code if the infarction is a direct result of an injury; instead, consider codes from the S40-S49 range for upper arm injuries.
• If laterality (left or right upper arm) is specified, use the more specific codes M62.221 or M62.222.