ICD-10-CM › S00-T88 › T66-T78 › T75.83 Effects of war theater › T75.830

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2026 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

• T75.830A Gulf war illness, initial encounter
• T75.830D Gulf war illness, subsequent encounter
• T75.830S Gulf war illness, sequela

This code requires a seventh character. See the rule below.

What has happened to this code

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from T75 Other and unspecified effects of other external causes

Seventh character required

• The appropriate 7th character is to be added to each code from category T75

Excludes1 - never coded here

• adverse effects NEC (T78.-)

Excludes2 - not included here

• burns (electric) (T20-T31)

Inherited from the T66-T78 section Other and unspecified effects of external causes (T66-T78)

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-)

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

• Illness > Gulf war
• Syndrome > Gulf war

Codes in the same group

Code	Description	Status
T75.838	Effects of other war theater	Not billable