T78.05XS — Anaphylactic reaction due to tree nuts and seeds, sequela
Is T78.05XS billable?
Yes — T78.05XS is billable for FY2027. T78.05XS is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. T78.05XS may be submitted for encounters from October 1, 2026 through September 30, 2027.
T78.05XS at a glance
| Code | T78.05XS |
|---|---|
| Description | Anaphylactic reaction due to tree nuts and seeds, 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 T78.05XS?
In T78.05XS, the 7th character S means sequela. The 7th character is required for T78.05XS to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does T78.05XS group to?
T78.05XS 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 T78.05XS listed in the Alphabetic Index?
The Alphabetic Index lists these routes under T78.05, the nearest indexed parent of T78.05XS. Use them to find the family, then select the specific code.
- Shock › anaphylactic › due to food › nuts
- Shock › anaphylactic › due to food › seeds
- Shock › anaphylactic › due to food › nuts › multiple types
Excludes2 — not included here
The conditions below are not part of T78.05XS, but a patient may have both at the same time. When documentation supports it, T78.05XS and the excluded code may both be reported.
- anaphylactic reaction due to peanuts (T78.01)
Use additional code — inherited from Chapter 19
Report an additional code alongside T78.05XS to fully describe the condition. T78.05XS 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 T78.05XS, but a patient may have both at the same time. When documentation supports it, T78.05XS and the excluded code may both be reported.
Excludes2 — not included here — inherited from T78
The conditions below are not part of T78.05XS, but a patient may have both at the same time. When documentation supports it, T78.05XS and the excluded code may both be reported.
- complications of surgical and medical care NEC (T80-T88)
Excludes2 — not included here — inherited from T78.05
The conditions below are not part of T78.05XS, but a patient may have both at the same time. When documentation supports it, T78.05XS and the excluded code may both be reported.
- anaphylactic reaction due to peanuts (T78.01)
Code also — inherited from T66-T78
Two codes may be needed to describe the condition fully. Whether T78.05XS is sequenced first depends on the reason for the encounter.
- , if applicable, place of occurrence, such as:
- highway rest stop (Y92.523)
- school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-)
- service areas as the place of occurrence of the external cause (Y92.52-)
- single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-)
- transport vehicle as the place of occurrence of the external cause (Y92.81-)
How long has T78.05XS existed?
T78.05XS 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.