A00

Non-Billable

ChapterA00–B99

Rankcategory

Official Description

Cholera

Metadata & Insights

•2026 ICD-10-CM Edition - Effective October 1, 2025.
•Non-billable category (requires more specific sub-code).
•Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

CH1 Parent Instructions

Includes

diseases generally recognized as communicable or transmissible

Excludes1(Not coded here)

certain localized infections - see body system-related chapters

Excludes2(Not included here)

carrier or suspected carrier of infectious disease (Z22.-)
infectious and parasitic diseases complicating pregnancy, childbirth and the puerperium (O98.-)
infectious and parasitic diseases specific to the perinatal period (P35-P39)
influenza and other acute respiratory infections (J00-J22)

Use Additional Code

code to identify resistance to antimicrobial drugs (Z16.-)

Clinical Hierarchy

CH1Certain infectious and parasitic diseases (A00-B99)

A00-A09Intestinal infectious diseases (A00-A09)

A00Cholera

A00.0Cholera due to Vibrio cholerae 01, biovar cholerae

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

A00.9Cholera, unspecified

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A00:

chapterCH1

Certain infectious and parasitic diseases (A00-B99)

View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to A00. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

13 raw paths

Cholera (Asiatic) (epidemic) (malignant)7 unique routes

Direct index entry→A00

classical→A00

due to Vibrio cholerae 01→A00(4 variants)

biovar cholerae→A00

biovar eltor→A00

el tor→A00

Diarrhea, diarrheal (disease) (infantile) (inflammatory)1 unique routes

choleriformis→A00

Eltor cholera1 unique routes

Direct index entry→A00