ICD-10-CM 2027 diagnosis code
T34.812Frostbite with tissue necrosis of left ankle
T34.812 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About T34.812
T34.812 is the ICD-10-CM diagnosis code for frostbite with tissue necrosis of left ankle. It belongs to category T34 (frostbite with tissue necrosis), block T33-T34 (frostbite) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.
Within T34.81 (frostbite with tissue necrosis of ankle), T34.812 is specifically for frostbite with tissue necrosis of left ankle. Related codes cover right ankle (T34.811) and unspecified ankle (T34.819).
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.
7th character
The appropriate 7th character is to be added to each code from category T34
Notes that apply from higher levels
Instructions written at a parent level also apply to T34.812.
Broader instructions also apply from T33-T34 Frostbite and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Code history
- 2016
- 2017
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- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T34.812
Is T34.812 billable?
- No. T34.812 is a header code. Report one of its more specific subcodes instead.