Corrosion of first degree of unspecified lower leg, sequela

This code indicates a first-degree corrosion (chemical burn) on an unspecified area of the lower leg, where the acute injury has healed but residual effects or complications persist. First-degree corrosions involve only the epidermis, causing redness and pain without blistering. The "sequela" designation signifies that this code is used for late effects of the original injury.

Use this code when documenting a patient presenting with a current problem directly resulting from a first-degree chemical burn to the lower leg that occurred in the past. This could include chronic pain, scarring, or pigmentation changes that are a direct consequence of the original corrosion. It is appropriate when the acute phase of the burn has concluded.

• Always sequence this code after the code for the specific sequela (e.g., chronic pain, scar).
• Ensure documentation clearly links the current condition to a past first-degree corrosion of the lower leg.
• Avoid using this code for active, acute chemical burns; those require codes from the acute phase of injury.