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  4. T66-T78
  5. T75
  6. 2026 ICD-10-CM Code T75.83

2026 ICD-10-CM Diagnosis Code T75.83

Effects of war theater

ICD-10-CM Code:
T75.83
ICD-10 Code for:
Effects of war theater
Is Billable?
Not Valid for Submission
Code Navigator:

T75.83 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of effects of war theater. 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 Effects of war theater

Non-specific codes like T75.83 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 effects of war theater:

  • T75.830 for Gulf war illness - NON-BILLABLE CODE

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

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

  • Use T75.830S for sequela - BILLABLE CODE

  • T75.838 for Effects of other war theater - NON-BILLABLE CODE

  • Use T75.838A for initial encounter - BILLABLE CODE

  • Use T75.838D for subsequent encounter - BILLABLE CODE

  • Use T75.838S 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.


Use Additional Code

Use Additional Code
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
  • code to identify associated manifestations

Code History

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