Inj intrinsic musc/fasc/tend l thm at wrs/hnd lv, sequela

This code signifies a long-term complication or residual effect stemming from a previous injury to an intrinsic muscle, fascia, or tendon of the left thumb, specifically at the wrist or hand level. This could include chronic pain, weakness, limited range of motion, or other persistent issues resulting from an earlier acute injury to these structures.

Use this code when documenting a patient presenting with a current condition that is a direct consequence of a past injury to the intrinsic muscles, fascia, or tendons of the left thumb. This applies to situations where the initial acute injury has healed, but the patient continues to experience lasting effects. Examples include chronic tenosynovitis following a past tendon laceration, or persistent muscle weakness after a severe sprain.

• Always use this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic pain, muscle weakness).
• Ensure documentation clearly links the current condition to a past injury of the specified anatomical structures.
• Verify the injury location is precisely the left thumb at the wrist or hand level, and not another digit or a more proximal/distal location.