T33.99XD — Superficial frostbite of other sites, subsequent encounter
Is T33.99XD billable?
Yes — T33.99XD is billable for FY2027. T33.99XD is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T33.99XD may be submitted for encounters from October 1, 2026 through September 30, 2027.
T33.99XD at a glance
| Code | T33.99XD |
|---|---|
| Description | Superficial frostbite of other sites, subsequent encounter |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "D" | subsequent encounter |
What does the 7th character "D" mean in T33.99XD?
In T33.99XD, the 7th character D means subsequent encounter. The 7th character is required for T33.99XD to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T33.99XD group to?
T33.99XD sits in MDC 23 and helps define the logic of 2 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 949Aftercare with CC/MCCmedical
- 950Aftercare without CC/MCCmedical
How is T33.99XD listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T33.99, the nearest indexed parent of T33.99XD. Use them to find the family, then select the specific code.
- Frostbite › leg (superficial)
- Frostbite › specified site NEC (superficial)
- Frostbite › trunk (superficial)
- Frostbite › limb › lower (superficial)
Inclusion terms
Alternative wording in documentation that is classified to T33.99XD.
- Superficial frostbite of leg NOS
- Superficial frostbite of trunk NOS
Use additional code — inherited from Chapter 19
Report an additional code alongside T33.99XD to fully describe the condition. T33.99XD 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 T33.99XD, but a patient may have both at the same time. When documentation supports it, T33.99XD and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33-T34
The conditions below are not part of T33.99XD, but a patient may have both at the same time. When documentation supports it, T33.99XD and the excluded code may both be reported.
How long has T33.99XD existed?
T33.99XD 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.