Is ICD-10-CM code A80 billable?

No, A80 (Acute poliomyelitis) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

What chapter does ICD-10-CM code A80 belong to?

A80 belongs to Chapter 1 of the ICD-10-CM tabular list: A00–B99 (Certain Infectious and Parasitic Diseases).

A80Not billable, use a more specific code below

Acute poliomyelitis

In Viral and prion infections of the central nervous system (A80-A89), chapter 1: Certain Infectious and Parasitic Diseases

7 billable codes under A80: 5 are an MCC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

Excludes1: not coded here, use a different code

acute flaccid myelitis (G04.82)

Also applies, from Viral and prion infections of the central nervous system (A80-A89)

These notes sit on A80-A89 and apply to every code under it, including A80.

Excludes1: not coded here, use a different code

postpolio syndrome (G14)
sequelae of poliomyelitis (B91)
sequelae of viral encephalitis (B94.1)

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)

Read Section I.C.1 (page 19)

All codes under A80

A80 can't be used on a claim. Pick a billable code below; grey headings group them.

A80 MS-DRGs

As the principal diagnosis, the billable codes under A80 group to these 7 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

DRG 023 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator (6 of 7 codes)
DRG 024 Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC (6 of 7 codes)
DRG 097 Non-Bacterial Infection of Nervous System Except Viral Meningitis with MCC (6 of 7 codes)
DRG 098 Non-Bacterial Infection of Nervous System Except Viral Meningitis with CC (6 of 7 codes)
DRG 099 Non-Bacterial Infection of Nervous System Except Viral Meningitis without CC/MCC (6 of 7 codes)
DRG 865 Viral Illness with MCC (1 of 7 codes)
DRG 866 Viral Illness without MCC (1 of 7 codes)

Other codes that refer to A80

Notes on these codes point to A80.

A85 Excludes1: encephalitis due to poliomyelitis virus (A80.-)
A87 Excludes1: meningitis due to poliomyelitis virus (A80.-)
G02 Code First: poliovirus infection (A80.-)
G05 Code First: poliovirus (A80.-)
O98.5 Includes: Conditions in A80-B09, B25-B34, R87.81-, R87.82-

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Polio and Post-Polio Syndrome

Polio, or poliomyelitis, is a disease that spreads from person to person. It is caused by the poliovirus. The virus attacks the nervous system. In serious cases, it can cause paralysis (where you can't move parts of the body). The paralysis may be lifelong and can sometimes be life-threatening.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.