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ICD-10-CM 2027

ICD-10 code for Gulf war illness

T75.830

Gulf war illness

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Illness › Gulf war”. Page updated September 29, 2026.

About coding Gulf war illness

The ICD-10-CM code for Gulf war illness is T75.830 (Gulf war illness).

Within T75.83 (effects of war theater), T75.830 is specifically for Gulf war illness. Related codes cover effects of other war theater (T75.838).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It was added in FY2026, effective October 1, 2025.

Common questions about Gulf war illness ICD-10 codes

What is the ICD-10 code for Gulf war illness?

T75.830 — Gulf war illness (a header code; report a more specific subcode).

Is T75.830 billable?

No. T75.830 is a header code. Report one of its more specific subcodes instead.