T33.521 — Superficial frostbite of right hand
Is T33.521 billable?
No — T33.521 is a non-billable header code. T33.521 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 3 billable codes beneath T33.521.
T33.521 at a glance
| Code | T33.521 |
|---|---|
| Description | Superficial frostbite of right hand |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is T33.521 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T33.52, the nearest indexed parent of T33.521. Use them to find the family, then select the specific code.
- Frostbite › hand (superficial)
Use additional code — inherited from Chapter 19
Report an additional code alongside T33.521 to fully describe the condition. T33.521 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 T33.521, but a patient may have both at the same time. When documentation supports it, T33.521 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33-T34
The conditions below are not part of T33.521, but a patient may have both at the same time. When documentation supports it, T33.521 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33.52
The conditions below are not part of T33.521, but a patient may have both at the same time. When documentation supports it, T33.521 and the excluded code may both be reported.
- superficial frostbite of fingers (T33.53-)
What codes fall under T33.521? (3)
How long has T33.521 existed?
T33.521 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.