T33.9 — Superficial frostbite of other and unspecified sites

Not billable

Is T33.9 billable?

No — T33.9 is a non-billable header code. T33.9 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 6 billable codes beneath T33.9.

Billable codes under this header

T33.9 at a glance

Code	T33.9
Description	Superficial frostbite of other and unspecified sites
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Use additional code — inherited from Chapter 19

Report an additional code alongside T33.9 to fully describe the condition. T33.9 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 T33.9, but a patient may have both at the same time. When documentation supports it, T33.9 and the excluded code may both be reported.

birth trauma (P10-P15)
obstetric trauma (O70-O71)

Excludes2 — not included here — inherited from T33-T34

The conditions below are not part of T33.9, but a patient may have both at the same time. When documentation supports it, T33.9 and the excluded code may both be reported.

hypothermia and other effects of reduced temperature (T68, T69.-)

What codes fall under T33.9? (2)

How long has T33.9 existed?

T33.9 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.