Injury of unsp nerve at forearm level, left arm, sequela

This code signifies a long-term or late-effect condition resulting from an injury to an unspecified nerve in the left forearm. It indicates that the initial acute injury has resolved, but the patient continues to experience residual symptoms or complications directly attributable to that past nerve damage.

Apply this code when documenting a patient presenting with persistent neurological deficits, such as weakness, numbness, or pain, in the left forearm, and the medical record clearly links these symptoms to a previous, unspecified nerve injury in that region. This code is appropriate for follow-up encounters addressing the chronic sequelae of such an injury.

• Ensure the medical record explicitly states "sequela" or indicates a chronic condition resulting from a past injury.
• Only use this code when the specific nerve involved in the forearm injury is not documented. If a specific nerve (e.g., median, ulnar, radial) is identified, a more precise code should be selected.
• This code requires a 7th character "S" for sequela, indicating that it is a late effect of the injury.