Listeriosis
In Other bacterial diseases (A30-A49), chapter 1: Certain Infectious and Parasitic Diseases
8 billable codes under A32: 1 is an MCC, 7 are a CC; 1 map to HCC 2 (Septicemia, Sepsis, Systemic Inflammatory Response Syndrome/Shock).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Includes: conditions that are coded here
- listerial foodborne infection
Excludes1: not coded here, use a different code
- neonatal (disseminated) listeriosis (P37.2)
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
Rules for coding infections and parasitic diseases, including HIV, organism and drug resistance codes, sepsis and septic shock, MRSA, Zika, and COVID-19.
- Human Immunodeficiency Virus (HIV) Infections (page 19)
- Infectious agents as the cause of diseases classified to other chapters (page 22)
- Infections resistant to antibiotics (page 22)
- Sepsis, Severe Sepsis, and Septic Shock (page 23)
- Methicillin Resistant Staphylococcus aureus (MRSA) Conditions (page 27)
- Zika virus infections (page 28)
- Coronavirus infections (page 28)
All codes under A32
A32 can't be used on a claim. Pick a billable code below; grey headings group them.
- A32.0Cutaneous listeriosis
- A32.1Listerial meningitis and meningoencephalitis
- A32.11Listerial meningitis
- A32.12Listerial meningoencephalitis
- A32.7Listerial sepsis
- A32.8Other forms of listeriosis
- A32.81Oculoglandular listeriosis
- A32.82Listerial endocarditis
- A32.89Other forms of listeriosis
- A32.9Listeriosis, unspecified
A32 MS-DRGs
As the principal diagnosis, the billable codes under A32 group to MS-DRG 867, 868, 869, 870, 871, or 872 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 867 Other Infectious and Parasitic Diseases Diagnoses with MCC (7 of 8 codes)
- DRG 868 Other Infectious and Parasitic Diseases Diagnoses with CC (7 of 8 codes)
- DRG 869 Other Infectious and Parasitic Diseases Diagnoses without CC/MCC (7 of 8 codes)
- DRG 870 Septicemia or Severe Sepsis with MV >96 Hours (1 of 8 codes)
- DRG 871 Septicemia or Severe Sepsis without MV >96 Hours with MCC (1 of 8 codes)
- DRG 872 Septicemia or Severe Sepsis without MV >96 Hours without MCC (1 of 8 codes)
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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 more about listeria infections on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.