A18.32 Tuberculous enteritis

✓ Billable ICD-10-CM 2026
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The ICD-10-CM code for Tuberculous enteritis is A18.32 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Section
A15-A19: Tuberculosis (A15-A19)
Category A18
38 codes (32 billable)
FY2026 Status
Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to A18.32:

  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › tuberculous
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › alimentary canal
  • Proctitis › tuberculous
  • Appendicitis (pneumococcal) (retrocecal) › tuberculous
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › appendicitis, appendix
  • Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) › tuberculous (ulcerative)
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory) › tuberculous
  • Tuberculosis, tubercular, tuberculous (calcification) (calcified) (caseous) (chromogenic acid-fast bacilli) (degeneration) (fibrocaseous) (fistula) (interstitial) (isolated circumscribed lesions) (necrosis) (parenchymatous) (ulcerative) › anus

Inclusion Terms

  • Tuberculosis of anus and rectum
  • Tuberculosis of intestine (large) (small)

U.S. Hospital Utilization

  • An estimated 70 U.S. inpatient stays in 2023 included A18.32 among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

HIV Infections (TOC entry)

a. Human Immunodeficiency Virus (HIV) Infections .............................................................. 19

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.a
Infectious agents causing diseases in other chapters (TOC)

b. Infectious agents as the cause of diseases classified to other chapters ................................. 22

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section I.C.1.b

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Related Codes

Parent Code

A18 Tuberculosis of other organs

Related Codes in A18

A18 Tuberculosis of other organs A18.0 Tuberculosis of bones and joints A18.01 Tuberculosis of spine A18.02 Tuberculous arthritis of other joints A18.03 Tuberculosis of other bones A18.09 Other musculoskeletal tuberculosis A18.1 Tuberculosis of genitourinary system A18.10 Tuberculosis of genitourinary system, unspecified A18.11 Tuberculosis of kidney and ureter A18.12 Tuberculosis of bladder A18.13 Tuberculosis of other urinary organs A18.14 Tuberculosis of prostate A18.15 Tuberculosis of other male genital organs A18.16 Tuberculosis of cervix A18.17 Tuberculous female pelvic inflammatory disease A18.18 Tuberculosis of other female genital organs A18.2 Tuberculous peripheral lymphadenopathy A18.3 Tuberculosis of intestines, peritoneum and mesenteric glands A18.31 Tuberculous peritonitis A18.39 Retroperitoneal tuberculosis
Search all 70,000+ ICD-10-CM codes →
Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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