T34.90XS — Frostbite with tissue necrosis of unspecified sites, sequela
Is T34.90XS billable?
Yes, but T34.90XS is an unspecified code. T34.90XS is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, T34.90XS 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 T34.90XS — the more specific alternatives are listed below.
More specific alternatives
- T34.02XSFrostbite with tissue necrosis of nose, sequela
- T34.1XXSFrostbite with tissue necrosis of neck, sequela
- T34.2XXSFrostbite with tissue necrosis of thorax, sequela
- T34.3XXSFrostbite with tissue necrosis of abdominal wall, lower back and pelvis, sequela
- T34.40XSFrostbite with tissue necrosis of unspecified arm, sequela
- T34.511SFrostbite with tissue necrosis of right wrist, sequela
- T34.60XSFrostbite with tissue necrosis of unspecified hip and thigh, sequela
- T34.70XSFrostbite with tissue necrosis of unspecified knee and lower leg, sequela
- T34.811SFrostbite with tissue necrosis of right ankle, sequela
T34.90XS at a glance
| Code | T34.90XS |
|---|---|
| Description | Frostbite with tissue necrosis of unspecified sites, sequela |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "S" | sequela |
What does the 7th character "S" mean in T34.90XS?
In T34.90XS, the 7th character S means sequela. The 7th character is required for T34.90XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T34.90XS group to?
T34.90XS sits in MDC 21 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.
- 922Other Injury, Poisoning and Toxic Effect Diagnoses with MCCmedical
- 923Other Injury, Poisoning and Toxic Effect Diagnoses without MCCmedical
How is T34.90XS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T34.90, the nearest indexed parent of T34.90XS. Use them to find the family, then select the specific code.
- Frostbite › with › tissue necrosis (superficial)
Inclusion terms
Alternative wording in documentation that is classified to T34.90XS.
- Frostbite with tissue necrosis NOS
Use additional code — inherited from Chapter 19
Report an additional code alongside T34.90XS to fully describe the condition. T34.90XS 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 T34.90XS, but a patient may have both at the same time. When documentation supports it, T34.90XS and the excluded code may both be reported.
Excludes2 — not included here — inherited from T33-T34
The conditions below are not part of T34.90XS, but a patient may have both at the same time. When documentation supports it, T34.90XS and the excluded code may both be reported.
How long has T34.90XS existed?
T34.90XS 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.