A00.1 Cholera due to Vibrio cholerae 01, biovar eltor

The ICD-10-CM code for Cholera due to Vibrio cholerae 01, biovar eltor is A00.1 (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 A00.1:

• Eltor cholera
• Cholera (Asiatic) (epidemic) (malignant) › el tor
• Diarrhea, diarrheal (disease) (infantile) (inflammatory) › choleriformis
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › choleriformis
• Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective) › eltor
• Cholera (Asiatic) (epidemic) (malignant) › due to Vibrio cholerae 01 › biovar eltor
• Cholera (Asiatic) (epidemic) (malignant) › due to Vibrio cholerae 01 › el tor
• Infection, infected, infective (opportunistic) › Vibrio › cholerae › El Tor

Inclusion Terms

• Cholera eltor

U.S. Hospital Utilization

A00.1 appeared in too few sampled U.S. inpatient stays in 2023 to report a national estimate (AHRQ suppresses counts of 10 or fewer) — a rare inpatient diagnosis.

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)