2018 ICD-10-CM Diagnosis Code T33.9

Superficial frostbite of other and unspecified sites

The following code(s) above T33.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T33.9:
  • S00-T88
    2018 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T33-T34
    2018 ICD-10-CM Range T33-T34


    Type 2 Excludes
    • hypothermia and other effects of reduced temperature (T68, T69.-)
  • T33
    ICD-10-CM Diagnosis Code T33

    Superficial frostbite

      2016 2017 2018 Non-Billable/Non-Specific Code
    • frostbite with partial thickness skin loss
    Superficial frostbite
Code History

Diagnosis Index entries containing back-references to T33.9:

ICD-10-CM Codes Adjacent To T33.9
T33.831D …… subsequent encounter
T33.831S …… sequela
T33.832 Superficial frostbite of left toe(s)
T33.832A …… initial encounter
T33.832D …… subsequent encounter
T33.832S …… sequela
T33.839 Superficial frostbite of unspecified toe(s)
T33.839A …… initial encounter
T33.839D …… subsequent encounter
T33.839S …… sequela
T33.9 Superficial frostbite of other and unspecified sites
T33.90 Superficial frostbite of unspecified sites
T33.90XA …… initial encounter
T33.90XD …… subsequent encounter
T33.90XS …… sequela
T33.99 Superficial frostbite of other sites
T33.99XA …… initial encounter
T33.99XD …… subsequent encounter
T33.99XS …… sequela
T34 Frostbite with tissue necrosis
T34.0 Frostbite with tissue necrosis of head

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.