Separation of muscle (nontraumatic), unspecified thigh

This diagnosis code signifies an involuntary, non-traumatic separation or detachment of muscle fibers within an unspecified area of the thigh. It indicates a muscle tear or rupture that is not a result of an external injury, such as a fall or direct impact. This condition often presents with pain, swelling, and impaired function in the affected thigh.

Utilize this code when documentation clearly indicates a non-traumatic muscle separation in the thigh, and the specific muscle involved is not identified. This applies to spontaneous ruptures, degenerative tears, or those resulting from underlying systemic conditions. Physician notes should explicitly state "non-traumatic" and specify the thigh as the affected region.

• Ensure documentation specifies "non-traumatic" to differentiate from traumatic muscle injuries (S70-S79 codes).
• Avoid using this code if a more specific muscle (e.g., quadriceps, hamstring) or a more specific location within the thigh is documented; instead, use the appropriate M62.05- subcategory.
• Always review the medical record for any underlying systemic conditions that may have contributed to the muscle separation, and code those conditions as primary or secondary diagnoses as appropriate.