T78.05
Anaphylactic reaction due to tree nuts and seeds
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 4 never code together
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
T78.0code
Inclusion terms
- Anaphylactic reaction due to adverse food reaction
- Anaphylactic shock or reaction due to nonpoisonous foods
- Anaphylactoid reaction due to food
S00-T88chapter
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
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here 1
Alongside this code 9 same parent — T78.0
T78.00 Anaphylactic reaction due to unspecified food category T78.01 Anaphylactic reaction due to peanuts category T78.02 Anaphylactic reaction due to shellfish (crustaceans) category T78.03 Anaphylactic reaction due to other fish category T78.04 Anaphylactic reaction due to fruits and vegetables category T78.06 Anaphylactic reaction due to food additives category T78.07 Anaphylactic reaction due to milk and dairy products category T78.08 Anaphylactic reaction due to eggs category T78.09 Anaphylactic reaction due to other food products category
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.