Other rupture of muscle (nontraumatic), unspecified thigh

This code signifies a spontaneous, non-traumatic tear or disruption of muscle fibers within the thigh region. It indicates a rupture not caused by an external force or injury, but rather from internal factors such as muscle overuse, degeneration, or sudden contraction. The specific muscle affected within the thigh is not identified.

Apply this code when documentation clearly states a non-traumatic muscle rupture in the thigh, and the specific muscle involved is not specified. This is appropriate for conditions like spontaneous quadriceps or hamstring ruptures where the exact muscle head or belly is not detailed. Documentation should explicitly rule out any external trauma as the cause.

• Ensure documentation explicitly states "nontraumatic" or "spontaneous" to differentiate from traumatic muscle tears (S76.- codes).
• Avoid using this code if the specific thigh muscle (e.g., quadriceps, hamstring) is identified; instead, use a more specific M62.1- subcategory.
• If laterality (right or left thigh) is documented, select the appropriate M62.151 or M62.152 code instead of this unspecified option.