Corrosion of unspecified degree of chin, subs encntr

This code signifies a burn-like injury (corrosion) to the chin, where the specific depth or severity of the injury is not documented. It indicates that the patient is receiving follow-up care for this injury after the initial treatment phase.

Use this code for subsequent visits related to a chemical burn of the chin when the degree of the burn was not specified in the medical record. This applies to encounters for wound care, medication adjustments, or monitoring healing progress after the initial treatment.

• Ensure documentation clearly states "subsequent encounter" for the chin corrosion.
• Only use when the degree of corrosion (e.g., first, second, third) is explicitly unspecified in the medical record.
• If the degree of corrosion is known, a more specific T20.4- code should be selected.