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A32

A32Listeriosis

Non-billable headerICD-10-CM

A32 is a non-billable header ICD-10-CM code for listeriosis. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • neonatal (disseminated) listeriosis (P37.2)

Includes

Conditions this code covers.

  • listerial foodborne infection

Other codes that can never be billed with A32

These codes carry an Excludes1 note pointing at A32. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading A32 alone.

  • A05Other bacterial foodborne intoxications, not elsewhere classified
  • G01Meningitis in bacterial diseases classified elsewhere
  • G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
  • I39Endocarditis and heart valve disorders in diseases classified elsewhere
  • I68.2Cerebral arteritis in other diseases classified elsewhere

Risk adjustment

A32 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead A32

5 child codes. Green means billable.

Questions about A32

Is A32 a billable ICD-10-CM code?
No. A32 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does A32 sit in the tabular list?
Certain infectious and parasitic diseases (A00-B99), in the block Other bacterial diseases (A30-A49).
What cannot be coded together with A32?
A32 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.