Other rupture of muscle (nontraumatic), unsp lower leg

This code signifies a spontaneous, non-traumatic tear or disruption of muscle tissue in an unspecified area of the lower leg. It indicates a muscle rupture not caused by external force, injury, or accident. The specific muscle involved is not documented or known.

Use this code when documentation clearly states a non-traumatic muscle rupture in the lower leg, but the exact muscle (e.g., gastrocnemius, soleus) is not specified. This code is appropriate for conditions like a "tennis leg" where the specific muscle involved in the rupture is not identified in the medical record.

• Ensure documentation explicitly states "nontraumatic" or "spontaneous" to differentiate from traumatic ruptures.
• Avoid using this code if a more specific muscle or laterality (right/left) is documented; look for codes like M62.13- or M62.14-.
• This code should be used when the lower leg is the documented site, and no further specificity is available regarding the exact muscle or laterality.