Corrosion of first degree of left thigh, sequela

This code signifies a first-degree burn on the left thigh caused by corrosive substances, where the acute injury has healed, and the patient is now presenting for follow-up care or treatment of a residual effect. It indicates a superficial chemical burn affecting only the epidermis, with the "sequela" designation pointing to a long-term consequence or a healed injury being addressed.

Apply this code when documenting a patient visit for a healed first-degree corrosive burn of the left thigh, where the focus is on a residual scar, persistent skin changes, or for follow-up after the initial acute treatment. It is appropriate for situations where the burn itself is no longer active but its lasting effects are relevant to the encounter.

• Ensure the burn is specifically of the left thigh and caused by a corrosive agent.
• Only use the "S" (sequela) seventh character for encounters addressing complications or long-term effects of a healed burn, not for the initial acute injury.
• Do not use this code for active, acute burns; a different seventh character would be required for the initial encounter.