T33.81 — Superficial frostbite of ankle
Is T33.81 billable?
No — T33.81 is a non-billable header code. T33.81 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 9 billable codes beneath T33.81.
Billable codes under this header
- T33.811ASuperficial frostbite of right ankle, initial encounter
- T33.811DSuperficial frostbite of right ankle, subsequent encounter
- T33.811SSuperficial frostbite of right ankle, sequela
- T33.812ASuperficial frostbite of left ankle, initial encounter
- T33.812DSuperficial frostbite of left ankle, subsequent encounter
- T33.812SSuperficial frostbite of left ankle, sequela
- T33.819ASuperficial frostbite of unspecified ankle, initial encounter
- T33.819DSuperficial frostbite of unspecified ankle, subsequent encounter
- T33.819SSuperficial frostbite of unspecified ankle, sequela
T33.81 at a glance
| Code | T33.81 |
|---|---|
| Description | Superficial frostbite of ankle |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is T33.81 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to T33.81. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Frostbite › ankle (superficial)
Use additional code — inherited from Chapter 19
Report an additional code alongside T33.81 to fully describe the condition. T33.81 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T33.81, but a patient may have both at the same time. When documentation supports it, T33.81 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33-T34
The conditions below are not part of T33.81, but a patient may have both at the same time. When documentation supports it, T33.81 and the excluded code may both be reported.
What codes fall under T33.81? (3)
How long has T33.81 existed?
T33.81 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.