DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

A00 Cholera

  • Header · not billable

A00 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Eltor cholera → A00.1
  • Cholera (Asiatic) (epidemic) (malignant) → A00.9
  • Cholera (Asiatic) (epidemic) (malignant)el tor → A00.1

Where it sits

  1. Chapter 1 Certain infectious and parasitic diseases (A00-B99)
  2. A00-A09 Intestinal infectious diseases (A00-A09)
  3. A00 Cholera
Billable codes
3
Subdivisions
3
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
13

Codes in A00

  1. A00.0
    Cholera due to Vibrio cholerae 01, biovar cholerae
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Classical cholera
  2. A00.1
    Cholera due to Vibrio cholerae 01, biovar eltor
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Cholera eltor
  3. A00.9
    Cholera, unspecified
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

Notes that also apply

Chapter 1 instructions (Includes 1, Excludes2 5, Use additional code 1): printed on the chapter 1 page.

Index entries

  • Eltor cholera → A00.1
  • Cholera (Asiatic) (epidemic) (malignant) → A00.9
  • Cholera (Asiatic) (epidemic) (malignant)classical → A00.0
  • Cholera (Asiatic) (epidemic) (malignant)el tor → A00.1
  • Diarrhea, diarrheal (disease) (infantile) (inflammatory)choleriformis → A00.1
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)choleriformis → A00.1
  • Enteritis (acute) (diarrheal) (hemorrhagic) (noninfective)eltor → A00.1
  • Cholera (Asiatic) (epidemic) (malignant)due to Vibrio cholerae 01 → A00.9
  • Cholera (Asiatic) (epidemic) (malignant)due to Vibrio cholerae 01biovar cholerae → A00.0
  • Infection, infected, infective (opportunistic)Vibriocholerae → A00.0
  • Cholera (Asiatic) (epidemic) (malignant)due to Vibrio cholerae 01biovar eltor → A00.1
  • Cholera (Asiatic) (epidemic) (malignant)due to Vibrio cholerae 01el tor → A00.1
  • Infection, infected, infective (opportunistic)VibriocholeraeEl Tor → A00.1

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy