T25.4 Corrosion of unspecified degree of ankle and foot

Non-billable header with 4 child codes.

Code first

• (T51-T65) to identify chemical and intent

Use additional code

• external cause code to identify place (Y92)

Applies from T25 Burn and corrosion of ankle and foot

7th character note

• The appropriate 7th character is to be added to each code from category T25

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Codes under T25.4

• T25.41 Corrosion of unspecified degree of ankle
• T25.42 Corrosion of unspecified degree of foot
• T25.43 Corrosion of unspecified degree of toe(s) (nail)
• T25.49 Corrosion of unspecified degree of multiple sites of ankle and foot

Code annotations containing back-references to T25.4

Back-references to T25

• Type 2 Excludes: T24 Burn and corrosion of lower limb, except ankle and foot ("burn and corrosion of ankle and foot (T25.-)")
• Type 1 Excludes: T66 Radiation sickness, unspecified ("burns (T20-T31)")
• Type 2 Excludes: T67 Effects of heat and light ("burns (T20-T31)")
• Type 2 Excludes: T75 Other and unspecified effects of other external causes ("burns (electric) (T20-T31)")

Nearby codes

• T25.392S Burn of third degree of multiple sites of left ankle and foot, sequela
• T25.399 Burn of third degree of multiple sites of unspecified ankle and foot
• T25.399A Burn of third degree of multiple sites of unspecified ankle and foot, initial encounter
• T25.399D Burn of third degree of multiple sites of unspecified ankle and foot, subsequent encounter
• T25.399S Burn of third degree of multiple sites of unspecified ankle and foot, sequela
• T25.4 Corrosion of unspecified degree of ankle and foot (this code)
• T25.41 Corrosion of unspecified degree of ankle
• T25.411 Corrosion of unspecified degree of right ankle
• T25.411A Corrosion of unspecified degree of right ankle, initial encounter
• T25.411D Corrosion of unspecified degree of right ankle, subsequent encounter
• T25.411S Corrosion of unspecified degree of right ankle, sequela