A22.2 Gastrointestinal anthrax

The ICD-10-CM code for Gastrointestinal anthrax is A22.2 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

1: Certain infectious and parasitic diseases (A00-B99)

Section

A20-A28: Certain zoonotic bacterial diseases (A20-A28)

Category A22

7 codes (6 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to A22.2:

• Colitis (acute) (catarrhal) (chronic) (noninfective) (hemorrhagic) › anthrax
• Anthrax › intestinal
• Anthrax › colitis
• Anthrax › gastrointestinal

Official Coding Guidelines

HIV Infections (TOC entry)

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

Infectious agents causing diseases in other chapters (TOC)

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

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

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool