Corrosion of unspecified degree of chin, sequela

This code indicates a long-term complication or late effect resulting from a chemical burn (corrosion) to the chin, where the original burn's severity is not specified. It signifies that the acute phase of the injury has passed, and the patient is now experiencing residual issues directly attributable to the past corrosion.

Use this code when documenting conditions such as scarring, contractures, chronic pain, or disfigurement of the chin that are a direct consequence of a previously sustained chemical burn. This applies when the original injury is no longer active but its lasting effects require ongoing medical attention or evaluation.

• Always sequence this sequela code after the code for the specific nature of the sequela (e.g., scar, contracture).
• Ensure documentation clearly links the current condition to a past chemical burn of the chin.
• Do not use for active or acute chemical burns; those require codes from the T20.0-T20.3 series.