ICD-10-CM 2027
ICD-10 code for ankle frostbite
From the official ICD-10-CM alphabetic index entry “Frostbite (superficial) › ankle”. Page updated September 29, 2026.
About coding ankle frostbite
The ICD-10-CM code for ankle frostbite is T33.81 (Superficial frostbite of ankle). The official index lists 1 more specific code, so check the documentation for details such as type, cause, site or severity before settling on T33.81.
Within T33.8 (superficial frostbite of ankle, foot, and toe(s)), T33.81 is specifically for superficial frostbite of ankle. Related codes cover foot (T33.82) and toe(s) (T33.83).
Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
More specific ankle frostbite codes (official index)
- with tissue necrosis T34.81 — Frostbite with tissue necrosis of ankle
Common questions about ankle frostbite ICD-10 codes
What is the ICD-10 code for ankle frostbite?
- T33.81 — Superficial frostbite of ankle (a header code; report a more specific subcode). More specific codes apply when the documentation supports them: T34.81.
Is T33.81 billable?
- No. T33.81 is a header code. Report one of its more specific subcodes instead.