Corrosion of first degree of left ear, subsequent encounter

This code signifies a superficial burn, specifically a first-degree corrosion, affecting the left outer ear or any part of the ear except the eardrum. It indicates damage limited to the outermost layer of skin, characterized by redness and mild pain, without blistering or skin breakage.

Apply this code for follow-up encounters where a patient is receiving ongoing care for a first-degree chemical burn to their left external ear. This includes situations like wound checks, dressing changes, or medication refills after the initial treatment. It is appropriate when the injury is not new and the patient is past the initial acute phase of care.

• Ensure the documentation clearly specifies "corrosion" (chemical burn) and not a thermal burn.
• Verify the laterality is explicitly documented as "left ear."
• Confirm the encounter is for subsequent care, not the initial treatment of the injury.