T33
Non-billableSuperficial frostbite
Superficial frostbite
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- frostbite with partial thickness skin loss
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
Use Additional Code
Additional codes that should follow this code
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (10)
T33.0Superficial frostbite of head
T33.1Superficial frostbite of neck
T33.2Superficial frostbite of thorax
T33.3Superficial frostbite of abd wall, lower back and pelvis
T33.4Superficial frostbite of arm
T33.5Superficial frostbite of wrist, hand, and fingers
T33.6Superficial frostbite of hip and thigh
T33.7Superficial frostbite of knee and lower leg
T33.8Superficial frostbite of ankle, foot, and toe(s)
T33.9Superficial frostbite of other and unspecified sites
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(6)
Frequently Asked Questions
What is the ICD-10 code for superficial frostbite?
The ICD-10-CM code for superficial frostbite is T33. The full clinical description is "Superficial frostbite". T33 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code T33 mean?
ICD-10-CM code T33 represents “Superficial frostbite”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.
Is T33 a billable code?
No, T33 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under T33.
What chapter is T33 in?
T33 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with T33?
T33 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71).
What are the subcategories under T33?
T33 has 10 child codes, including: T33.0 (Superficial frostbite of head), T33.1 (Superficial frostbite of neck), T33.2 (Superficial frostbite of thorax), T33.3 (Superficial frostbite of abd wall, lower back and pelvis), and 6 more.
Are additional codes required with T33?
Yes, when using T33, also report: any retained foreign body, if applicable (Z18.-).
What are the UMLS CUIs for T33?
T33 is linked to 2 UMLS Concept Unique Identifiers: C0332699, C4290398. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does T33 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like superficial frostbite affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of T33?
T33 maps to the ICD-11 code: NE40 (Superficial frostbite).
Automate ICD-10 Coding With AI
Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.
Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.