Lacerat extensor musc/fasc/tend thmb at wrs/hnd lv, subs

This code signifies a tear or cut to the extensor muscles, fascia, or tendons of an unspecified thumb, located at the wrist or hand level. This injury has been previously treated and the patient is now presenting for follow-up care, such as wound checks, cast changes, or rehabilitation.

Use this code for patients presenting for subsequent care following an initial laceration to the extensor structures of the thumb. This includes scenarios where the patient is receiving ongoing treatment, monitoring healing, or undergoing physical therapy for the injury.

• Ensure documentation specifies "subsequent encounter" for this specific injury.
• Verify the injury location is at the wrist or hand level of the thumb.
• Confirm the laceration involves extensor muscle, fascia, or tendon, not just skin.