Listeriosis (A32) ICD-10-CM
The A32 code range covers listeriosis with 11 ICD-10-CM diagnosis codes. 8 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- listerial foodborne infection
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- neonatal disseminated listeriosis P37.2
Codes in the A32 Range 11 codes · 8 billable
- A32 ListeriosisNon-billable
- A32.0 Cutaneous listeriosis
- A32.1 Listerial meningitis and meningoencephalitisNon-billable
- A32.11 Listerial meningitis
- A32.12 Listerial meningoencephalitis
- A32.7 Listerial sepsis
- A32.8 Other forms of listeriosisNon-billable
- A32.81 Oculoglandular listeriosis
- A32.82 Listerial endocarditis
- A32.89 Other forms of listeriosis
- A32.9 Listeriosis, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the A32 range.
Listeria
A genus of bacteria which may be found in the feces of animals and man, on vegetation, and in silage. Its species are parasitic on cold-blooded and warm-blooded animals, including man.
Listeriosis
Infections with bacteria of the genus LISTERIA.
About the A32 Code Range
The ICD-10 codes starting with A32 are designated for various forms of listeriosis, an infection caused by the bacterium Listeria monocytogenes. These codes cover specific clinical presentations such as meningitis, sepsis, and skin infections.
The ICD-10 code for listeriosis includes a range of conditions. A32.0 identifies cutaneous listeriosis, a skin infection. Codes A32.1, A32.11, and A32.12 relate to listerial meningitis and meningoencephalitis, with A32.11 specifying Listeria meningitis and A32.12 covering meningoencephalitis, sometimes called bacterial meningoencephalitis. A32.7 is used for listerial sepsis, often described as sepsis caused by Listeria. Other forms, like oculoglandular listeriosis (A32.81) or listerial endocarditis (A32.82), also have specific codes. The code A32.9 covers unspecified listeriosis, which might include various presentations such as food poisoning or infections linked to miscarriage. Using these codes helps accurately classify the diverse and sometimes complex manifestations of listeriosis for medical records and coding.
Questions About This Page
How many billable codes are in the A32 range?
Of the 11 codes in this range, 8 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the A32 range classify?
The range classifies listeriosis. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
