Strain of msl/fasc/tnd post grp at thi lev, left thigh, init

This code signifies a non-traumatic injury to the hamstring muscles (biceps femoris, semitendinosus, semimembranosus), their surrounding fascia, or their tendons located in the back of the left thigh. It indicates an overstretching or tearing of these tissues, resulting in pain and functional impairment.

Apply this code for patients presenting with a newly diagnosed hamstring strain on the left side, often sustained during athletic activities like sprinting, kicking, or sudden acceleration. It is appropriate for the initial visit where the injury is first evaluated and treated.

• Ensure documentation specifies the left thigh and posterior muscle group (hamstrings).
• Confirm this is the initial encounter for this specific injury, not a follow-up or sequela.
• Distinguish from contusions or sprains of other thigh muscle groups.