Frostbite (T33-T34) ICD-10-CM
The T33–T34 section covers frostbite with 326 ICD-10-CM diagnosis codes, of which 222 are billable in fiscal year 2027. The section is organized into the 2 code ranges listed below.
Type 2 Excludes
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Code Ranges in This Section 2 ranges · 326 codes
| Code Range | Title | Codes | Billable |
|---|---|---|---|
| T33 | Superficial frostbite (T33) | 163 | 111 |
| T34 | Frostbite with tissue necrosis (T34) | 163 | 111 |
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the T33–T34 Code Range
Frostbite is separated here into superficial frostbite and frostbite with tissue necrosis, meaning tissue death.
T33 identifies superficial frostbite, while T34 identifies frostbite with tissue necrosis. Both categories subdivide by affected area, including the head, torso, limbs, fingers, and toes. The seventh character distinguishes an initial encounter, a subsequent encounter, or a later effect.
Questions About This Page
How many codes are in the T33-T34 range?
The T33-T34 range contains 326 ICD-10-CM diagnosis codes in FY 2027. 222 of them are billable, and the rest are category headers that organize the section.
What conditions does T33-T34 cover?
The range covers frostbite. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
