Corrosion of third degree of left forearm, subs encntr

This code signifies a severe chemical burn affecting the entire thickness of the skin and underlying tissues on the patient's left forearm. It indicates that the patient is receiving follow-up care for this injury, such as wound checks, dressing changes, or management of complications.

Apply this code when documenting subsequent encounters for a patient previously diagnosed with a third-degree chemical burn to the left forearm. This includes visits for ongoing treatment, monitoring healing progress, or addressing late effects of the corrosion. Do not use for the initial treatment of the injury.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) rather than a thermal burn.
• Verify the laterality is "left" and the body site is "forearm."
• Confirm the encounter is for follow-up care, indicated by the "D" seventh character.