Corrosion of unspecified degree of lip(s), sequela

This code signifies a long-term consequence or late effect resulting from a corrosive injury to the lips, where the initial degree of the burn was not specified. It indicates that the acute phase of the injury has passed, and the patient is now experiencing residual issues directly attributable to the past corrosive exposure.

Apply this code when documenting conditions such as scarring, contractures, or chronic pain in the lips that are a direct result of a previous corrosive burn. This is appropriate for follow-up encounters after the initial injury has healed, but ongoing sequelae require management.

• Always ensure the "S" seventh character is appropriate, indicating a sequela, not an active injury.
• Code any specific manifestations of the sequela (e.g., scar, contracture) in addition to this code.
• Verify that the medical record clearly links the current lip condition to a past corrosive exposure.