Lacerat intrinsic musc/fasc/tend thmb at wrs/hnd lv, init

This code signifies a tear or cut to the intrinsic muscles, fascia, or tendons within the thumb, specifically at the wrist or hand level. It indicates damage to the structures responsible for fine motor movements and stability of the thumb, excluding injuries to the long flexor or extensor tendons that originate in the forearm.

Use this code for acute injuries such as those sustained from a sharp object, crush injury, or avulsion that results in a laceration of the thumb's intrinsic musculature, fascia, or tendons. This code is appropriate for the initial treatment of such an injury, prior to definitive repair or follow-up care.

• Ensure documentation specifies the thumb and the intrinsic nature of the muscle/fascia/tendon involved.
• Verify the injury location is at the wrist or hand level, not the forearm or more distal phalanx.
• Confirm this is the initial encounter for the injury; subsequent encounters will require a different seventh character.