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

This code signifies an injury to the extensor muscles, fascia, or tendons of the left index finger, specifically occurring at the forearm level. This type of injury involves damage to the structures responsible for extending the index finger, located proximally to the wrist joint.

Use this code for initial encounters involving a patient presenting with a sprain, strain, tear, or other non-fracture injury to the extensor apparatus of the left index finger, where the injury site is clearly documented as being within the forearm. This would include injuries sustained from direct trauma, overuse, or sudden forceful movements affecting these specific structures.

• Ensure documentation explicitly states the injury is to the extensor structures of the left index finger and located at the forearm level.
• This code is for "initial encounter" (A); subsequent encounters will require different seventh characters.
• Differentiate from injuries to the flexor tendons or injuries at the hand/wrist level.