2027 ICD-10-CM Diagnosis Code A32Listeriosis

ICD-10-CM Codes›A00–B99›A30-A49›A32

ICD-10-CM A32
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A32 is a non-billable ICD-10-CM category code for listeriosis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A32.0, A32.11, A32.12, and A32.7.

Code Identity

ICD-10-CM Code
A32
Billable Status
No — Non-Billable Category
Code Describes
Listeriosis
Short Description
Listeriosis
Same as the full description in the CMS dataset.
Chapter
A30-A49
Other bacterial diseases

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA30-A49Other bacterial diseases
CategoryA32Listeriosis
This CodeA32Listeriosis

Specific Coding for ListeriosisOverview

Non-specific codes like A32 require more characters. Use one of these billable codes instead:

  • Use A32.0 for Cutaneous listeriosis

  • A32.1 for Listerial meningitis and meningoencephalitis

  • Use A32.11 for Listerial meningitis

  • Use A32.12 for Listerial meningoencephalitis

  • Use A32.7 for Listerial sepsis

  • A32.8 for Other forms of listeriosis

  • Use A32.81 for Oculoglandular listeriosis

  • Use A32.82 for Listerial endocarditis

  • Use A32.89 for Other forms of listeriosis

  • Use A32.9 for Listeriosis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A32: its own notes plus those printed at Chapter 1. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

On A32 itself
  • listerial foodborne infection
From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • diseases generally recognized as communicable or transmissible

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

  • neonatal (disseminated) listeriosis (P37.2)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • carrier or suspected carrier of infectious disease (Z22.-)
  • certain localized infections - see body system-related chapters
  • 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

Add a second code, after this one, to fully describe the condition.

From Chapter 1 (A00-B99) Certain infectious and parasitic diseases applies to 1,068 codes
  • code to identify resistance to antimicrobial drugs (Z16.-)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name A32, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming A32: they are not reported together with it, unless the two conditions are unrelated.

  • A05 Other bacterial foodborne intoxications, not elsewhere classified
    listeriosis (A32.-)

Clinical InformationClinical

  • Listeriosis

    infections with bacteria of the genus listeria.

Patient EducationClinical

Listeria Infections

Listeriosis is a foodborne illness caused by Listeria monocytogenes, bacteria found in soil and water. It can be in a variety of raw foods as well as in processed foods and foods made from unpasteurized milk. Listeria is unlike many other germs because it can grow even in the cold temperature of the refrigerator.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About A32Overview

What is the ICD-10 code for listeriosis?

A32 is the ICD-10-CM category for listeriosis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is A32 (Listeriosis) a billable code?

No. This is a category header that groups the codes for listeriosis, and headers cannot be submitted on claims. Claims for listeriosis need a more specific code from this category, such as A32.0, A32.11, and A32.12.

Can A32 be reported with P37.2?

Not as a rule. The Excludes1 note on A32 lists "neonatal (disseminated) listeriosis (P37.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).