M66.822
ICD-10-CMThis code signifies a non-traumatic tear of a tendon in the patient's left upper arm, excluding the rotator cuff, flexor, and extensor tendons of the hand and wrist. This rupture occurs without an external force or injury, often due to degenerative changes or underlying systemic conditions.
Apply this code when documentation clearly indicates a spontaneous (non-traumatic) rupture of a tendon in the left upper arm, such as the biceps or triceps tendon. The medical record should specify the left side and rule out an acute injury as the cause.
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