T75.830D Gulf war illness, subsequent encounter

Billable ICD-10-CM code, FY2026.

Built from T75.830 with 7th character D (subsequent encounter).

Applies from T75 Other and unspecified effects of other external causes

Excludes1 (never code together)

• adverse effects NEC (T78.-)

Excludes2 (not included here)

• burns (electric) (T20-T31)

7th character note

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

7th character required

• A — initial encounter
• D — subsequent encounter
• S — sequela

Applies from T75.83 Effects of war theater

Use additional code

• code to identify associated manifestations

Applies from T75.830 Gulf war illness

Applicable to

• Gulf war syndrome

Diagnosis Index entries for T75.830D

• Illness › Gulf war
• Syndrome › Gulf war

Nearby codes

• T75.82XD Effects of weightlessness, subsequent encounter
• T75.82XS Effects of weightlessness, sequela
• T75.83 Effects of war theater
• T75.830 Gulf war illness
• T75.830A Gulf war illness, initial encounter
• T75.830D Gulf war illness, subsequent encounter (this code)
• T75.830S Gulf war illness, sequela
• T75.838 Effects of other war theater
• T75.838A Effects of other war theater, initial encounter
• T75.838D Effects of other war theater, subsequent encounter
• T75.838S Effects of other war theater, sequela