Inj extn/abdr musc/fasc/tend of thmb at forearm level, init

This code signifies an injury to the extensor or abductor muscles, fascia, or tendons of an unspecified thumb, occurring at the forearm level. This injury is not a sprain, strain, or laceration, but rather another type of damage to these specific tissues. The "initial encounter" designation indicates the patient is receiving active treatment for this new injury.

Use this code for a patient presenting with a new injury to the ext thumb's extensor or abductor musculotendinous unit at the forearm, where the specific nature of the injury is not a sprain, strain, or open wound. This could include contusions, avulsions, or other unspecified trauma to these structures. It is appropriate for the initial visit where diagnosis and treatment are being established.

• Ensure the documentation specifies "other injury" and not a sprain, strain, or laceration.
• Verify the injury location is at the forearm level, affecting the thumb's extensor/abductor structures.
• Confirm this is the initial encounter for active treatment of this specific injury.