T33
ICD-10Non-billable categorySuperficial frostbite
Official ICD-10-CM descriptor (FY2026)
Superficial frostbite
T33 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- frostbite with partial thickness skin loss
7th character
- The appropriate 7th character is to be added to each code from category T33
Permitted 7th characters
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes under T33
- T33.0Superficial frostbite of headcategory
- T33.1Superficial frostbite of neckcategory
- T33.2Superficial frostbite of thoraxcategory
- T33.3Superficial frostbite of abd wall, lower back and pelviscategory
- T33.4Superficial frostbite of armcategory
- T33.5Superficial frostbite of wrist, hand, and fingerscategory
- T33.6Superficial frostbite of hip and thighcategory
- T33.7Superficial frostbite of knee and lower legcategory
- T33.8Superficial frostbite of ankle, foot, and toe(s)category
- T33.9Superficial frostbite of other and unspecified sitescategory
Where this code sits
- Block
- Frostbite (T33-T34)
Krasyn AI Coder
Get code suggestions automatically as you type notes. Free for 50 analyses.
Install for Chrome — freeSource
ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.