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2025 ICD-10-CM code T23.771A

Corrosion of third degree of right wrist, initial encounter.

Use additional code from category T31 or T32 to identify the extent of body surface involved if applicable. Code first any associated chemical poisoning (T51-T65) and any associated complications, such as infection.Use a secondary code from Chapter 20, External causes of morbidity (V01-Y99), to indicate the cause of the injury (e.g., accidental exposure, assault).Use an additional code to identify any retained foreign body, if applicable (Z18.-).

Medical necessity is established by the nature and extent of the injury. Third-degree burns require specialized care to prevent infection, promote healing, and manage pain. The documentation must support the severity of the corrosion to justify the medical treatment provided.

The provider is responsible for documenting the details of the injury, including the cause, the degree of tissue damage (full-thickness skin loss), and the specific location on the right wrist.They should also document the circumstances surrounding the injury to support the external cause code.

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.

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