T78.089

Anaphylactic reaction due to eggs, unspecified

Not billable — category only FY2026 2025-10-01 → 2026-09-30 FY2026–2027 only

This is the unspecified option. 2 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.

Exclusions 3 never code together

T78code

Excludes2

Excludes2

Excludes2 — not included here, but the patient may have both. Code both when documented.

7th character 3

A initial encounter

D subsequent encounter

S sequela

Instructional notes 6

Inclusion terms

Notes

Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.

Use additional code

Index entries leading here 2

Allergy, allergic (reaction) (to) T78.40
- eggs
  - anaphylactic reaction T78.089
Shock R57.9
- anaphylactic T78.2
  - due to food (nonpoisonous) T78.00
    - eggs T78.089

Alongside this code 2 same parent — T78.08

Subordinate codes 3

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

Present FY2026–FY2027.