Inj extensor musc/fasc/tend l mid finger at wrs/hnd lv, subs

This code signifies a subsequent encounter for an injury to the extensor muscle, fascia, or tendon of the left middle finger, specifically located at the wrist or hand level. It indicates an injury other than a laceration or open wound, such as a strain, sprain, or contusion, that is currently undergoing active treatment or recovery.

Apply this code when a patient presents for follow-up care, rehabilitation, or ongoing management of a previously diagnosed non-laceration injury to the extensor structures of the left middle finger. This includes scenarios like physical therapy sessions, re-evaluation of healing progress, or medication adjustments for the injury.

• Ensure the encounter is indeed "subsequent" and not the initial treatment for the injury.
• Verify the injury specifically affects the extensor structures and not flexor.
• Confirm the injury site is the left middle finger at the wrist or hand level.