T78

Non-Billable

ChapterS00–T88

Rankcategory

Official Description

Adverse effects, not elsewhere classified

Use a more specific code (3 billable, 3 non-billable)

Metadata & Insights

•Non-billable category (requires more specific sub-code).
•Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

Excludes2(Not included here. Code separately if applicable.)

Use Additional Code

Code Also

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

Excludes2(Not included here. Code separately if applicable.)

BillableHas subcodes

CH19Injury, poisoning and certain other consequences of external causes (S00-T88)

T66-T78Other and unspecified effects of external causes (T66-T78)

T78Adverse effects, not elsewhere classifiedNot billable

T78.0Anaphylactic reaction due to foodSubcodes

T78.1Other adverse food reactions, not elsewhere classifiedSubcodes

T78.2Anaphylactic shock, unspecifiedBillable

T78.3Angioneurotic edemaBillable

T78.4Other and unspecified allergySubcodes

T78.8Other adverse effects, not elsewhere classifiedBillable

The following parent sections contain instructions or notes that apply to T78:

Other and unspecified effects of external causes (T66-T78)

chapterCH19

Injury, poisoning and certain other consequences of external causes (S00-T88)

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Adverse effects, not elsewhere classified.