2019 ICD-10-CM Diagnosis Code T33.821S

Superficial frostbite of right foot, sequela

The following code(s) above T33.821S 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 T33.821S:
  • S00-T88
    2019 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
    2019 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 Non-Billable/Non-Specific Code
    • frostbite with partial thickness skin loss
    Superficial frostbite
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
ICD-10-CM T33.821S is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

Convert T33.821S to ICD-9-CM

Code History
ICD-10-CM Codes Adjacent To T33.821S
T33.812D …… subsequent encounter
T33.812S …… sequela
T33.819 Superficial frostbite of unspecified ankle
T33.819A …… initial encounter
T33.819D …… subsequent encounter
T33.819S …… sequela
T33.82 Superficial frostbite of foot
T33.821 Superficial frostbite of right foot
T33.821A …… initial encounter
T33.821D …… subsequent encounter
T33.821S …… sequela
T33.822 Superficial frostbite of left foot
T33.822A …… initial encounter
T33.822D …… subsequent encounter
T33.822S …… sequela
T33.829 Superficial frostbite of unspecified foot
T33.829A …… initial encounter
T33.829D …… subsequent encounter
T33.829S …… sequela
T33.83 Superficial frostbite of toe(s)
T33.831 Superficial frostbite of right toe(s)

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