T78.4

Other and unspecified allergy

Requires 7th character

T78.4 requires a 7th character to be reported. Choose a complete code below.

Inclusion terms

Note: 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
Note: 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.

Not coded here — never report together with this code.

specified types of allergic reaction such as:
allergic diarrhea (K52.29)
allergic gastroenteritis and colitis (K52.29)
dermatitis (L23-L25, L27.-)
food protein-induced enterocolitis syndrome (K52.21)
food protein-induced enteropathy (K52.22)
hay fever (J30.1)

Not included here — may be reported together when both conditions exist.

Add a code to identify the following, if applicable.

An additional code may be needed.

, if applicable, place of occurrence, such as: (from T78)
highway rest stop (Y92.523) (from T78)
school (private) (public) (state) as the place of occurrence of the external cause (Y92.21-) (from T78)
service areas as the place of occurrence of the external cause (Y92.52-) (from T78)
single-family non-institutional (private) house as the place of occurrence of the external cause (Y92.01-) (from T78)
transport vehicle as the place of occurrence of the external cause (Y92.81-) (from T78)

This code requires a 7th character (defined at T78). Use the placeholder "X" for missing positions.