T33.90XD — Superficial frostbite of unspecified sites, subsequent encounter
Is T33.90XD billable?
Yes, but T33.90XD is an unspecified code. T33.90XD is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T33.90XD is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting T33.90XD — the more specific alternatives are listed below.
More specific alternatives
- T33.02XDSuperficial frostbite of nose, subsequent encounter
- T33.1XXDSuperficial frostbite of neck, subsequent encounter
- T33.2XXDSuperficial frostbite of thorax, subsequent encounter
- T33.3XXDSuperficial frostbite of abdominal wall, lower back and pelvis, subsequent encounter
- T33.40XDSuperficial frostbite of unspecified arm, subsequent encounter
- T33.511DSuperficial frostbite of right wrist, subsequent encounter
- T33.60XDSuperficial frostbite of unspecified hip and thigh, subsequent encounter
- T33.70XDSuperficial frostbite of unspecified knee and lower leg, subsequent encounter
- T33.811DSuperficial frostbite of right ankle, subsequent encounter
T33.90XD at a glance
| Code | T33.90XD |
|---|---|
| Description | Superficial frostbite of unspecified 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 T33.90XD?
In T33.90XD, the 7th character D means subsequent encounter. The 7th character is required for T33.90XD to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T33.90XD group to?
T33.90XD 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 T33.90XD listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T33.90, the nearest indexed parent of T33.90XD. Use them to find the family, then select the specific code.
- Frostbite (superficial)
Inclusion terms
Alternative wording in documentation that is classified to T33.90XD.
- Superficial frostbite NOS
Use additional code — inherited from Chapter 19
Report an additional code alongside T33.90XD to fully describe the condition. T33.90XD 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 T33.90XD, but a patient may have both at the same time. When documentation supports it, T33.90XD and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33-T34
The conditions below are not part of T33.90XD, but a patient may have both at the same time. When documentation supports it, T33.90XD and the excluded code may both be reported.
How long has T33.90XD existed?
T33.90XD 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.