Inj extn/abdr musc/fasc/tend of thmb at forarm lv, sequela

This code signifies a long-term complication or residual effect from a previous injury to the extensor or abductor muscles, fascia, or tendons of an unspecified thumb, specifically at the forearm level. This could include chronic pain, weakness, limited range of motion, or other persistent issues stemming from the original trauma.

Apply this code when documenting the sequelae of an old injury to the thumb's extensor or abductor structures in the forearm region. This is appropriate for follow-up visits addressing ongoing problems directly related to the initial injury, after the acute phase of healing has passed.

• Ensure the medical record clearly documents the "S" (sequela) seventh character, indicating a late effect of an injury.
• This code requires a previous injury to have occurred and the current condition to be a direct result.
• Verify the injury location is specifically at the forearm level affecting the thumb's extensor/abductor mechanisms.