A92.31

A92.31: West Nile virus infection with encephalitis

Billable / specific codeICD-10-CM

A92.31 is a billable, specific ICD-10-CM code for west nile virus infection with encephalitis. It is valid for submission on a claim.

Check A92.31 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

West Nile encephalitis
West Nile encephalomyelitis

Excludes1 inherited from the categories above A92.31

A category’s note binds every code beneath it.

Written on A92: Other mosquito-borne viral fevers

Ross River disease (B33.1)

Other codes that can never be billed with A92.31

Their own Excludes1 notes name this code, so the conflict is not listed above.

A85.2Arthropod-borne viral encephalitis, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

A92.31 is named in 3 Medicare coverage policies: 3 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A56771Billing and Coding: Special Electroencephalography
A57204Billing and Coding: MRI and CT Scans of the Head and Neck
A59105Billing and Coding: Off-Label Use of Intravenous Immune Globulin (IVIG)

Alphabetic index entries that lead here

Virus, viral›West Nile›with›encephalitis
Virus, viral›West Nile›with›encephalomyelitis
Fever›West›Nile›with›encephalitis
Fever›West›Nile›with›encephalomyelitis

Code history

Unchanged in every release from FY2024 to FY2027.