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  6. 2026 ICD-10-CM Code T75.830

2026 ICD-10-CM Diagnosis Code T75.830

Gulf war illness

ICD-10-CM Code:
T75.830
ICD-10 Code for:
Gulf war illness
Is Billable?
Not Valid for Submission
Code Navigator:

T75.830 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of gulf war illness. The code is not specific and is NOT valid for the year 2026 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Gulf war illness

Non-specific codes like T75.830 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for gulf war illness:

  • Use T75.830A for initial encounter - BILLABLE CODE

  • Use T75.830D for subsequent encounter - BILLABLE CODE

  • Use T75.830S for sequela - BILLABLE CODE

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    S00–T88
    • Other and unspecified effects of external causes
      T66-T78
      • Other and unspecified effects of other external causes
        T75

Coding Guidelines

The appropriate 7th character is to be added to each code from block Other and unspecified effects of other external causes (T75). Use the following options for the aplicable episode of care:

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

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Inclusion Terms

Inclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
  • Gulf war syndrome

Index to Diseases and Injuries References

The following annotation back-references for this diagnosis code are found in the injuries and diseases index. The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10-CM code(s).

Index of External Cause of Injuries

References found for this diagnosis code in the External Cause of Injuries Index:

    • Illness
      • Gulf war
    • Syndrome
      • Gulf war

Code History

  • FY 2026 - No Change, effective from 10/1/2025 through 9/30/2026