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A18.83

A18.83: Tuberculosis of digestive tract organs, not elsewhere classified

Billable / specific codeICD-10-CM

A18.83 is a billable, specific ICD-10-CM code for tuberculosis of digestive tract organs, not elsewhere classified. It is valid for submission on a claim.

Check A18.83 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • tuberculosis of intestine (A18.32)

Other codes that can never be billed with A18.83

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • K23Disorders of esophagus in diseases classified elsewhere
  • K77Liver disorders in diseases classified elsewhere
  • K87Disorders of gallbladder, biliary tract and pancreas in diseases classified elsewhere

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A18.83 is named in 14 Medicare coverage policies: 14 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56394Billing and Coding: Colonoscopy and Sigmoidoscopy-Diagnostic
  • A56416Billing and Coding: Assays for Vitamins and Metabolic Function
  • A56421Billing and Coding: CT of the Abdomen and Pelvis
  • A56456Billing and Coding: Colonoscopy/Sigmoidoscopy/Proctosigmoidoscopy

Alphabetic index entries that lead here

  • Esophagitis›tuberculous
  • Gastritis›tuberculous
  • Hepatitis›tuberculous
  • Tuberculosis, tubercular, tuberculous›buccal cavity
  • Tuberculosis, tubercular, tuberculous›esophagus
  • Tuberculosis, tubercular, tuberculous›gallbladder
  • Tuberculosis, tubercular, tuberculous›gastritis
  • Tuberculosis, tubercular, tuberculous›gum
  • Tuberculosis, tubercular, tuberculous›hepatitis
  • Tuberculosis, tubercular, tuberculous›linguae
  • Tuberculosis, tubercular, tuberculous›lip
  • Tuberculosis, tubercular, tuberculous›liver

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under A18.8

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.