All ICD10 Codes

A92.31

Billable
ChapterA00–B99
Ranksubcategory
Official Description

West Nile virus infection with encephalitis

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 1: Certain Infectious and Parasitic Diseases (A00-B99).

Instructional Notes

Includes
  • West Nile encephalitis
  • West Nile encephalomyelitis
General instructions are available for the parent sections:
View CH1 NotesView A92 NotesView A92.3 Notes

Clinical Hierarchy

BillableHas subcodes
CH1Certain infectious and parasitic diseases (A00-B99)
A90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers (A90-A99)
A92Other mosquito-borne viral fevers
A92.3West Nile virus infection
A92.31West Nile virus infection with encephalitisBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to A92.31:

subcategoryA92.3
West Nile virus infection
View context instructions
categoryA92
Other mosquito-borne viral fevers
View context instructions
chapterCH1
Certain infectious and parasitic diseases (A00-B99)
View context instructions

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 865
Viral Illness with MCC
DRG 866
Viral Illness without MCC

Cross Reference

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