A80.4 Acute nonparalytic poliomyelitis

Billable ICD-10-CM code, FY2026.

Applies from A80 Acute poliomyelitis

Excludes1 (never code together)

• acute flaccid myelitis (G04.82)

MS-DRG index

Defines the logic of DRG(s) 865-866 in MDC 18.

Approximate ICD-9-CM (GEMs)

• 045.20 Acute nonparalytic poliomyelitis, poliovirus, unspecified type (approximate)

Code annotations containing back-references to A80.4

Back-references to A80

• Type 1 Excludes: A85 Other viral encephalitis, not elsewhere classified ("encephalitis due to poliomyelitis virus (A80.-)")
• Type 1 Excludes: A87 Viral meningitis ("meningitis due to poliomyelitis virus (A80.-)")
• Code First: G02 Meningitis in other infectious and parasitic diseases classified elsewhere ("poliovirus infection (A80.-)")
• Code First: G05 Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere ("poliovirus (A80.-)")

Diagnosis Index entries for A80.4

• Fever (inanition) (of unknown origin) (persistent) (with chills) (with rigor) › polioviral (nonparalytic)
• Poliomyelitis (acute) (anterior) (epidemic) › abortive
• Poliomyelitis (acute) (anterior) (epidemic) › nonparalytic

Nearby codes

• A80.1 Acute paralytic poliomyelitis, wild virus, imported
• A80.2 Acute paralytic poliomyelitis, wild virus, indigenous
• A80.3 Acute paralytic poliomyelitis, other and unspecified
• A80.30 Acute paralytic poliomyelitis, unspecified
• A80.39 Other acute paralytic poliomyelitis
• A80.4 Acute nonparalytic poliomyelitis (this code)
• A80.9 Acute poliomyelitis, unspecified