ICD-10-CM T33: Superficial frostbite

ICD-10-CM Diagnosis Code (2025)

Official Description for T33

Superficial frostbite

Coding Notes & Guidelines for T33

Includes Notes

frostbite with partial thickness skin loss

Excludes2: Not Included Here

superficial frostbite of wrist and hand (T33.5-)

Excludes2: Not Included Here

superficial frostbite of fingers (T33.53-)

Excludes2: Not Included Here

superficial frostbite of ankle and foot (T33.8-)

Inclusion Terms

Superficial frostbite NOS

Inclusion Terms
  • Superficial frostbite of leg NOS
  • Superficial frostbite of trunk NOS
7th Character Guidance

The appropriate 7th character is to be added to each code from category T33

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for T33):

T33.0 - Superficial frostbite of head T33.01 - Superficial frostbite of ear T33.011 - Superficial frostbite of right ear T33.012 - Superficial frostbite of left ear T33.019 - Superficial frostbite of unspecified ear T33.02 - Superficial frostbite of nose T33.09 - Superficial frostbite of other part of head T33.1 - Superficial frostbite of neck T33.2 - Superficial frostbite of thorax T33.3 - Superficial frostbite of abdominal wall, lower back and pelvis T33.4 - Superficial frostbite of arm T33.40 - Superficial frostbite of unspecified arm T33.41 - Superficial frostbite of right arm T33.42 - Superficial frostbite of left arm T33.5 - Superficial frostbite of wrist, hand, and fingers T33.51 - Superficial frostbite of wrist T33.511 - Superficial frostbite of right wrist T33.512 - Superficial frostbite of left wrist T33.519 - Superficial frostbite of unspecified wrist T33.52 - Superficial frostbite of hand T33.521 - Superficial frostbite of right hand T33.522 - Superficial frostbite of left hand T33.529 - Superficial frostbite of unspecified hand T33.53 - Superficial frostbite of finger(s) T33.531 - Superficial frostbite of right finger(s) T33.532 - Superficial frostbite of left finger(s) T33.539 - Superficial frostbite of unspecified finger(s) T33.6 - Superficial frostbite of hip and thigh T33.60 - Superficial frostbite of unspecified hip and thigh T33.61 - Superficial frostbite of right hip and thigh T33.62 - Superficial frostbite of left hip and thigh T33.7 - Superficial frostbite of knee and lower leg T33.70 - Superficial frostbite of unspecified knee and lower leg T33.71 - Superficial frostbite of right knee and lower leg T33.72 - Superficial frostbite of left knee and lower leg T33.8 - Superficial frostbite of ankle, foot, and toe(s) T33.81 - Superficial frostbite of ankle T33.811 - Superficial frostbite of right ankle T33.812 - Superficial frostbite of left ankle T33.819 - Superficial frostbite of unspecified ankle T33.82 - Superficial frostbite of foot T33.821 - Superficial frostbite of right foot T33.822 - Superficial frostbite of left foot T33.829 - Superficial frostbite of unspecified foot T33.83 - Superficial frostbite of toe(s) T33.831 - Superficial frostbite of right toe(s) T33.832 - Superficial frostbite of left toe(s) T33.839 - Superficial frostbite of unspecified toe(s) T33.9 - Superficial frostbite of other and unspecified sites T33.90 - Superficial frostbite of unspecified sites T33.99 - Superficial frostbite of other sites

About ICD-10-CM Code T33 (Superficial frostbite)

ICD-10-CM code T33 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T33 became effective on October 1, 2024.

This page provides detailed information about T33 - Superficial frostbite. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Superficial frostbite.