2023 ICD-10-CM Diagnosis Code A05.9

Bacterial foodborne intoxication, unspecified

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
  • A05.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2023 edition of ICD-10-CM A05.9 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of A05.9 - other international versions of ICD-10 A05.9 may differ.
The following code(s) above A05.9 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to A05.9:
  • A00-B99
    2023 ICD-10-CM Range A00-B99

    Certain infectious and parasitic diseases

    Includes
    • diseases generally recognized as communicable or transmissible
    Type 1 Excludes
    • certain localized infections - see body system-related chapters
    Type 2 Excludes
    • 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 to identify resistance to antimicrobial drugs (Z16.-)
    Certain infectious and parasitic diseases
  • A05
    ICD-10-CM Diagnosis Code A05

    Other bacterial foodborne intoxications, not elsewhere classified

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • Clostridium difficile foodborne intoxication and infection (A04.7-)
    • Escherichia coli infection (A04.0-A04.4)
    • listeriosis (A32.-)
    • salmonella foodborne intoxication and infection (A02.-)
    • toxic effect of noxious foodstuffs (T61-T62)
    Other bacterial foodborne intoxications, not elsewhere classified
Approximate Synonyms
  • Bacterial food poisoning
ICD-10-CM A05.9 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 391 Esophagitis, gastroenteritis and miscellaneous digestive disorders with mcc
  • 392 Esophagitis, gastroenteritis and miscellaneous digestive disorders without mcc

Convert A05.9 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to A05.9:
  • Creotoxism A05.9
  • Indigestion (acid) (bilious) (functional) K30
    ICD-10-CM Diagnosis Code K30

    Functional dyspepsia

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
    Applicable To
    • Indigestion
    Type 1 Excludes
    • due to decomposed food NOS A05.9
  • Intoxication
  • Kreotoxism A05.9
  • Poisoning (acute) - see also Table of Drugs and Chemicals

ICD-10-CM Codes Adjacent To A05.9
A04.8 Other specified bacterial intestinal infections
A04.9 Bacterial intestinal infection, unspecified
A05 Other bacterial foodborne intoxications, not elsewhere classified
A05.0 Foodborne staphylococcal intoxication
A05.1 Botulism food poisoning
A05.2 Foodborne Clostridium perfringens [Clostridium welchii] intoxication
A05.3 Foodborne Vibrio parahaemolyticus intoxication
A05.4 Foodborne Bacillus cereus intoxication
A05.5 Foodborne Vibrio vulnificus intoxication
A05.8 Other specified bacterial foodborne intoxications
A05.9 Bacterial foodborne intoxication, unspecified
A06 Amebiasis
A06.0 Acute amebic dysentery
A06.1 Chronic intestinal amebiasis
A06.2 Amebic nondysenteric colitis
A06.3 Ameboma of intestine
A06.4 Amebic liver abscess
A06.5 Amebic lung abscess
A06.6 Amebic brain abscess
A06.7 Cutaneous amebiasis
A06.8 Amebic infection of other sites

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.