T78.00XA Anaphylactic reaction due to unspecified food, init encntr

Instructional Notes:

T78.00XA
Description: Anaphylactic reaction due to unspecified food, init encntr
↓
T78.00
Description: Anaphylactic reaction due to unspecified food
↓
T78.0
Description: Anaphylactic reaction due to food
Inclusion Term:
- Anaphylactic reaction due to adverse food reaction
- Anaphylactic shock or reaction due to nonpoisonous foods
- Anaphylactoid reaction due to food
↓
T78
Description: Adverse effects, not elsewhere classified
Exclude2:
- complications of surgical and medical care NEC (T80-T88)
↓
T66-T78
Description: Other and unspecified effects of external causes (T66-T78)
↓
S00-T88
Description: Injury, poisoning and certain other consequences of external causes
Exclude2:
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
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
Use Additional Code:
- code to identify any retained foreign body, if applicable (Z18.-)