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2025 ICD-10-CM code T25.419

Corrosion of unspecified degree of unspecified ankle. Code first (T51-T65) to identify chemical and intent. Use additional external cause code to identify place (Y92).

Use additional code from category T31 or T32 to identify the extent of body surface involved. Use secondary code(s) from Chapter 20, External causes of morbidity (V01-Y99), to indicate the cause of injury. Use additional code to identify any retained foreign body, if applicable (Z18.-).

The documentation must support the medical necessity of the services provided for the chemical burn, such as debridement, wound care, or pain management. The documentation should also describe the severity of the injury and any functional limitations it has caused.

Assessment and initial care for a chemical burn. Determining the degree and extent of the burn. Documentation of the cause, location, and characteristics of the injury. Applying appropriate first aid and treatment. Coordinating further care with specialists if necessary.

In simple words: Chemical burn of the ankle of an unspecified depth.

Corrosion of unspecified degree of unspecified ankle. Includes: burns and corrosions of first degree [erythema], burns and corrosions of second degree [blisters][epidermal loss], burns and corrosions of third degree [deep necrosis of underlying tissue] [full-thickness skin loss]. Use additional code from category T31 or T32 to identify extent of body surface involved.

Example 1: A patient presents to the emergency room after accidentally spilling drain cleaner on their ankle. The skin is red and blistered. The physician diagnoses a second-degree chemical burn of the ankle and documents the injury using T25.419., A construction worker is splashed with an unknown chemical at a worksite. The chemical causes a full-thickness burn to his left ankle. The injury is documented with code T25.419 along with additional codes specifying the extent of the burn and the external cause., A child is brought to the clinic with a chemical burn on her ankle after playing with a household cleaning product. The depth of the burn is unclear. The physician documents the injury with code T25.419.

Location and laterality of the burn (right, left, or unspecified ankle). Degree of the burn (first, second, third, or unspecified). Cause of the burn (chemical agent involved). Size and characteristics of the burn (e.g., erythema, blisters, necrosis). Associated symptoms or complications.

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