2027 ICD-10-CM Diagnosis Code A80Acute poliomyelitis

ICD-10-CM Codes›A00–B99›A80-A89›A80

ICD-10-CM A80
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

A80 is a non-billable ICD-10-CM category code for acute poliomyelitis, so it cannot be submitted on claims. Use a more specific code from this category instead, such as A80.0, A80.1, A80.2, and A80.30.

Code Identity

ICD-10-CM Code
A80
Billable Status
No — Non-Billable Category
Code Describes
Acute poliomyelitis
Short Description
Acute poliomyelitis
Same as the full description in the CMS dataset.
Chapter
A80-A89
Viral and prion infections of the central nervous system

Code Classification

ChapterA00–B99Certain infectious and parasitic diseases
SectionA80-A89Viral and prion infections of the central nervous system
CategoryA80Acute poliomyelitis
This CodeA80Acute poliomyelitis

Specific Coding for Acute poliomyelitisOverview

Non-specific codes like A80 require more characters. Use one of these billable codes instead:

  • Use A80.0 for Acute paralytic poliomyelitis, vaccine-associated

  • Use A80.1 for Acute paralytic poliomyelitis, wild virus, imported

  • Use A80.2 for Acute paralytic poliomyelitis, wild virus, indigenous

  • A80.3 for Acute paralytic poliomyelitis, other and unspecified

  • Use A80.30 for Acute paralytic poliomyelitis, unspecified

  • Use A80.39 for Other acute paralytic poliomyelitis

  • Use A80.4 for Acute nonparalytic poliomyelitis

  • Use A80.9 for Acute poliomyelitis, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to A80: its own notes plus those printed at block A80-A89 and 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.

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.

On A80 itself
  • acute flaccid myelitis (G04.82)
From Block A80-A89 Viral and prion infections of the central nervous system applies to 48 codes
  • postpolio syndrome (G14)
  • sequelae of poliomyelitis (B91)
  • sequelae of viral encephalitis (B94.1)

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 A80, its category, or a range that includes it.

Excludes1 2

These codes carry an Excludes1 note naming A80: they are not reported together with it, unless the two conditions are unrelated.

  • A85 Other viral encephalitis, not elsewhere classified
    encephalitis due to poliomyelitis virus (A80.-)
  • A87 Viral meningitis
    meningitis due to poliomyelitis virus (A80.-)

Code First 2

These codes say to code first a condition named in the note, and A80 is one of the conditions named.

  • G02 Meningitis in other infectious and parasitic diseases classified elsewhere
    poliovirus infection (A80.-)
  • G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
    poliovirus (A80.-)

Clinical InformationClinical

  • Poliomyelitis

    an acute infectious disease of humans, particularly children, caused by any of three serotypes of human poliovirus (poliovirus). usually the infection is limited to the gastrointestinal tract and nasopharynx, and is often asymptomatic. the central nervous system, primarily the spinal cord, may be affected, leading to rapidly progressive paralysis, coarse fasciculation and hyporeflexia. motor neurons are primarily affected. encephalitis may also occur. the virus replicates in the nervous system, and may cause significant neuronal loss, most notably in the spinal cord. a rare related condition, nonpoliovirus poliomyelitis, may result from infections with nonpoliovirus enteroviruses. (from adams et al., principles of neurology, 6th ed, pp764-5)

Patient EducationClinical

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.

The full article covers:

  • What is polio?
  • How does polio spread?
  • Who is more likely to develop polio?
  • What are the symptoms of polio?
  • What is post-polio syndrome (PPS)?
  • How is polio diagnosed?
  • What are the treatments for polio and post-polio syndrome (PPS)?
  • Can polio be prevented?

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 A80Overview

What is the ICD-10 code for acute poliomyelitis?

A80 is the ICD-10-CM category for acute poliomyelitis, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is A80 (Acute poliomyelitis) a billable code?

No. This is a category header that groups the codes for acute poliomyelitis, and headers cannot be submitted on claims. Claims for acute poliomyelitis need a more specific code from this category, such as A80.0, A80.1, and A80.2.

Can A80 be reported with G04.82?

Not as a rule. The Excludes1 note on A80 lists "acute flaccid myelitis (G04.82)". 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).