Inj extensor musc/fasc/tend l idx fngr at wrs/hnd lv, init

This code signifies an injury to the extensor muscle, fascia, or tendon of the left index finger, specifically occurring at the wrist or hand level. This injury is not a rupture or laceration, but rather another type of damage such as a strain, sprain, or contusion. It indicates the initial treatment for this specific injury.

Use this code for a patient presenting with a new injury to the extensor mechanism of their left index finger, located in the wrist or hand region, that is not a complete tear. Examples include a patient who overstretched their finger during an activity, resulting in pain and swelling over the extensor tendon, or a contusion to the back of the hand affecting the index finger's extensor. This code is appropriate for the first encounter for this particular injury.

• Ensure the injury is to the extensor mechanism and specifically the index finger on the left hand.
• Verify the injury location is at the wrist or hand level, not the finger itself.
• Confirm this is the initial encounter for this specific injury. Subsequent care would require a different seventh character.