Strain musc/tend post grp at low leg level, unsp leg, init

This code signifies a non-traumatic injury to the muscles and/or tendons located in the posterior compartment of the lower leg, such as the gastrocnemius or soleus. It indicates an overstretching or tearing of these soft tissues without specifying the exact muscle or tendon involved.

Apply this code when documentation confirms a strain of an unspecified muscle or tendon within the posterior lower leg, and the affected leg is not specified (e.g., "calf strain, unspecified leg"). This is appropriate for the initial treatment of such an injury.

• Only use this code when the specific muscle or tendon involved in the posterior lower leg is not documented.
• Ensure the encounter is for the initial treatment of the injury; subsequent encounters will require a different seventh character.
• If the affected leg (left or right) is known, a more specific code should be used.