Strain of left quadriceps muscle, fascia and tendon, init

This code signifies a non-traumatic overstretching or tearing injury to the muscle, fascia, and/or tendon structures of the quadriceps group in the left thigh. It indicates damage to the soft tissues responsible for knee extension and hip flexion, without a complete rupture or fracture.

Apply this code for patients presenting with pain, swelling, and functional limitation in the left anterior thigh following activities such as sudden acceleration, sprinting, or forceful kicking. It is appropriate for the initial assessment and treatment phase of such an injury.

• Ensure documentation specifies the left quadriceps and confirms a strain, not a tear or rupture.
• Verify this is the patient's first encounter for this specific injury, not a subsequent visit or sequela.
• Distinguish from contusions or other soft tissue injuries of the thigh.