T78.2XXA

Anaphylactic shock, unspecified, initial encounter

Billable / specific

T78.2XXA is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

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.

anaphylactic reaction or shock due to adverse effect of correct medicinal substance properly administered (T88.6) (from T78.2)
anaphylactic reaction or shock due to adverse food reaction (T78.0-) (from T78.2)
anaphylactic reaction or shock due to serum (T80.5-) (from T78.2)

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)

The 7th character values that apply to this code (defined at T78). Use the placeholder "X" for missing positions.