In simple words: Third-degree corrosion (chemical burn) of the right wrist, first visit.

Corrosion of third degree of right wrist, initial encounter. Code first (T51-T65) to identify chemical and intent. Use additional external cause code to identify place (Y92).

Example 1: A patient presents to the emergency room after accidentally spilling a strong cleaning agent on their right wrist, resulting in a full-thickness skin loss. This is the patient's first encounter for this injury., A lab worker sustains a chemical burn to their right wrist during an experiment. The burn is classified as third-degree with full-thickness skin loss.The patient is seen in an occupational health clinic, and this is the initial encounter for the burn., A patient is being treated for a third-degree chemical burn to their right wrist.During a follow-up visit (subsequent encounter), the provider determines that the injury has resulted in significant scarring and functional limitations. The appropriate code for the follow-up encounter would be T23.771D, and a sequela code such as T23.771S may be used if there are long-term consequences.

Documentation should include the type of chemical agent involved, the circumstances of the injury, the depth of the burn (full-thickness skin loss involving the dermis, epidermis, and possibly subcutaneous tissue or deeper), the specific location on the right wrist, and associated symptoms. Photographs may be helpful.Documentation should also support the external cause code and any other relevant comorbidities or complications.