A00.9 Cholera, unspecified

The ICD-10-CM code for Cholera, unspecified is A00.9 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

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

Section

A00-A09: Intestinal infectious diseases (A00-A09)

Category A00

4 codes (3 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to A00.9:

• Cholera (Asiatic) (epidemic) (malignant)
• Cholera (Asiatic) (epidemic) (malignant) › due to Vibrio cholerae 01

U.S. Hospital Utilization

• An estimated 100 U.S. inpatient stays in 2023 included A00.9 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

Chapter 1 TOC entry

1. Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99), U07.1, U09.9 ................... 19

HIV Infections (TOC entry)

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

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
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)