ICD-10 Code for Frostbite
Also indexed as (superficial)
The ICD-10-CM code for frostbite is T33.90 — Superficial frostbite of unspecified sites. This is the code the Alphabetic Index gives for frostbite with no further qualifier, valid for FY2027 (October 1, 2026 – September 30, 2027).
T33.90 cannot be submitted on a claim. It is a header code, so a more specific code from the list below is required.
Which frostbite code should you use?
The Alphabetic Index lists 34 codes under Frostbite. Which one applies depends on the qualifier documented in the record — the type, site, cause, or associated condition. Find the qualifier below, then verify the code in the Tabular List before using it.
By type
| abdominal wall | T33.3 | Superficial frostbite of abdominal wall, lower back and pelvis | not billable |
| ankle | T33.81 | Superficial frostbite of ankle | not billable |
| arm | T33.4 | Superficial frostbite of arm | not billable |
| ear | T33.01 | Superficial frostbite of ear | not billable |
| face | T33.09 | Superficial frostbite of other part of head | not billable |
| finger | T33.53 | Superficial frostbite of finger(s) | not billable |
| foot | T33.82 | Superficial frostbite of foot | not billable |
| hand | T33.52 | Superficial frostbite of hand | not billable |
| head | T33.09 | Superficial frostbite of other part of head | not billable |
| hip | T33.6 | Superficial frostbite of hip and thigh | not billable |
| knee | T33.7 | Superficial frostbite of knee and lower leg | not billable |
| leg | T33.99 | Superficial frostbite of other sites | not billable |
| neck | T33.1 | Superficial frostbite of neck | not billable |
| nose | T33.02 | Superficial frostbite of nose | not billable |
| pelvis | T33.3 | Superficial frostbite of abdominal wall, lower back and pelvis | not billable |
| specified site NEC | T33.99 | Superficial frostbite of other sites | not billable |
| thorax | T33.2 | Superficial frostbite of thorax | not billable |
| toes | T33.83 | Superficial frostbite of toe(s) | not billable |
| trunk | T33.99 | Superficial frostbite of other sites | not billable |
| wrist | T33.51 | Superficial frostbite of wrist | not billable |
Frostbite with
| tissue necrosis | T34.90 | Frostbite with tissue necrosis of unspecified sites | not billable |
Frostbite abdominal wall
| with tissue necrosis | T34.3 | Frostbite with tissue necrosis of abdominal wall, lower back and pelvis | not billable |
Frostbite ankle
| with tissue necrosis | T34.81 | Frostbite with tissue necrosis of ankle | not billable |
Frostbite arm
| with tissue necrosis | T34.4 | Frostbite with tissue necrosis of arm | not billable |
Frostbite ear
| with tissue necrosis | T34.01 | Frostbite with tissue necrosis of ear | not billable |
Frostbite face
| with tissue necrosis | T34.09 | Frostbite with tissue necrosis of other part of head | not billable |
Frostbite finger
| with tissue necrosis | T34.53 | Frostbite with tissue necrosis of finger(s) | not billable |
Frostbite foot
| with tissue necrosis | T34.82 | Frostbite with tissue necrosis of foot | not billable |
Frostbite hand
| with tissue necrosis | T34.52 | Frostbite with tissue necrosis of hand | not billable |
Frostbite head
| with tissue necrosis | T34.09 | Frostbite with tissue necrosis of other part of head | not billable |
Frostbite hip
| with tissue necrosis | T34.6 | Frostbite with tissue necrosis of hip and thigh | not billable |
Frostbite knee
| with tissue necrosis | T34.7 | Frostbite with tissue necrosis of knee and lower leg | not billable |
Frostbite leg
Frostbite limb
Frostbite neck
| with tissue necrosis | T34.1 | Frostbite with tissue necrosis of neck | not billable |
Frostbite nose
| with tissue necrosis | T34.02 | Frostbite with tissue necrosis of nose | not billable |
Frostbite pelvis
| with tissue necrosis | T34.3 | Frostbite with tissue necrosis of abdominal wall, lower back and pelvis | not billable |
Frostbite specified site NEC
| with tissue necrosis | T34.99 | Frostbite with tissue necrosis of other sites | not billable |
Frostbite thorax
| with tissue necrosis | T34.2 | Frostbite with tissue necrosis of thorax | not billable |
Frostbite toes
| with tissue necrosis | T34.83 | Frostbite with tissue necrosis of toe(s) | not billable |
Frostbite trunk
| with tissue necrosis | T34.99 | Frostbite with tissue necrosis of other sites | not billable |
Frostbite wrist
| with tissue necrosis | T34.51 | Frostbite with tissue necrosis of wrist | not billable |
Codes under T33.90
Index terms and codes are reproduced from the official ICD-10-CM FY2027 release. The Alphabetic Index is a finding aid — a code must always be verified in the Tabular List before it is reported. Data sources