T33.9
Non-billableSuperficial frostbite of other and unspecified sites
Superficial frostbite of other and unspecified sites
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
Child Codes (2)
Related Codes(9)
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)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(1)
Frequently Asked Questions
What is the ICD-10 code for superficial frostbite of other and unspecified sites?
The ICD-10-CM code for superficial frostbite of other and unspecified sites is T33.9. The full clinical description is "Superficial frostbite of other and unspecified sites". T33.9 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code T33.9 mean?
ICD-10-CM code T33.9 represents “Superficial frostbite of other and unspecified sites”. 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 T33.9 a billable code?
No, T33.9 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 2 child codes under T33.9.
What chapter is T33.9 in?
T33.9 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with T33.9?
T33.9 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 T33.9?
T33.9 has 2 child codes, including: T33.90 (Superficial frostbite of unspecified sites), T33.99 (Superficial frostbite of other sites).
Are additional codes required with T33.9?
Yes, when using T33.9, also report: any retained foreign body, if applicable (Z18.-).
What are the UMLS CUIs for T33.9?
T33.9 is linked to 1 UMLS Concept Unique Identifier: C0478419. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does T33.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like superficial frostbite of other and unspecified sites 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 T33.9?
T33.9 maps to the ICD-11 code: NE40 (Superficial frostbite).
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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.