Corrosion of third degree of unsp forearm, init encntr

This code signifies a full-thickness injury to an unspecified forearm, resulting from contact with a corrosive substance. The damage extends through all layers of the skin and potentially into underlying tissues, indicating severe tissue destruction.

Apply this code when documentation clearly states a third-degree corrosion of the forearm, and the patient is receiving active treatment for the injury. This includes initial evaluations, surgical interventions, and acute phase management.

• Ensure the documentation specifies "corrosion" and "third degree" to differentiate from burns or other types of injuries.
• Verify the affected body part is the "forearm" and that laterality is not specified.
• The "A" seventh character indicates an initial encounter for active treatment of the corrosion.