Corrosion of third degree of lip(s), sequela

This code signifies a third-degree burn, also known as a full-thickness burn, affecting the lip(s) where the initial injury has healed, and the patient is now presenting for treatment of a complication or late effect. These sequelae can include scarring, contractures, or other long-term issues resulting from the original severe burn.

Use this code when documenting the long-term effects or complications of a third-degree burn to the lip(s) after the acute phase of the injury has passed. This is appropriate for patients presenting for reconstructive surgery, scar revision, or management of functional impairments directly attributable to the healed burn.

• Always assign an external cause code (V00-Y99) to identify the circumstances of the burn injury, even for sequela codes.
• Do not use this code for active, acute third-degree burns; instead, use the appropriate acute burn code with the 7th character 'A' (initial encounter).
• Consider additional codes for specific complications, such as hypertrophic scarring (L91.0) or contracture (M24.5-), if applicable.