ICD-10-CM 2027 diagnosis code
T33.012Superficial frostbite of left ear
T33.012 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 T33.012
T33.012 is the ICD-10-CM diagnosis code for superficial frostbite of left ear. It belongs to category T33 (superficial frostbite), 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 T33.01 (superficial frostbite of ear), T33.012 is specifically for superficial frostbite of left ear. Related codes cover right ear (T33.011) and unspecified ear (T33.019).
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 T33
Notes that apply from higher levels
Instructions written at a parent level also apply to T33.012.
› From T33 Superficial frostbite
- frostbite with partial thickness skin loss
Broader instructions also apply from T33-T34 Frostbite and Chapter 19: Injury, poisoning and certain other consequences of external causes.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about T33.012
Is T33.012 billable?
- No. T33.012 is a header code. Report one of its more specific subcodes instead.