2020 ICD-10-CM Diagnosis Code T33.521A

Superficial frostbite of right hand, initial encounter

    2016 2017 2018 2019 2020 Billable/Specific Code
  • T33.521A is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM T33.521A became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T33.521A - other international versions of ICD-10 T33.521A may differ.
The following code(s) above T33.521A 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 T33.521A:
  • S00-T88
    2020 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
    2020 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 2019 2020 Non-Billable/Non-Specific Code
    • frostbite with partial thickness skin loss
    Superficial frostbite
  • T33.52
    ICD-10-CM Diagnosis Code T33.52

    Superficial frostbite of hand

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • superficial frostbite of fingers (T33.53-)
    Superficial frostbite of hand
Approximate Synonyms
  • Frostbite of right hand
ICD-10-CM T33.521A is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 922 Other injury, poisoning and toxic effect diagnoses with mcc
  • 923 Other injury, poisoning and toxic effect diagnoses without mcc

Convert T33.521A to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To T33.521A
T33.512 Superficial frostbite of left wrist
T33.512A …… initial encounter
T33.512D …… subsequent encounter
T33.512S …… sequela
T33.519 Superficial frostbite of unspecified wrist
T33.519A …… initial encounter
T33.519D …… subsequent encounter
T33.519S …… sequela
T33.52 Superficial frostbite of hand
T33.521 Superficial frostbite of right hand
T33.521A …… initial encounter
T33.521D …… subsequent encounter
T33.521S …… sequela
T33.522 Superficial frostbite of left hand
T33.522A …… initial encounter
T33.522D …… subsequent encounter
T33.522S …… sequela
T33.529 Superficial frostbite of unspecified hand
T33.529A …… initial encounter
T33.529D …… subsequent encounter
T33.529S …… sequela

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