ICD10BillableValid for clinical use
ICD-10 Code A92.5: Zika virus disease
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Certain infectious and parasitic diseases (A00-B99).
đź“‹Clinical overview
This ICD-10 code is commonly used when documentation describes a mosquito-borne viral fever. The most accurate code depends on whether the chart identifies chikungunya, O'nyong-nyong fever, Venezuelan equine fever, West Nile virus, Rift Valley fever, Zika virus disease, another specified mosquito-borne viral fever, or an unspecified presentation, and for West Nile whether neurologic involvement is documented.
When is it used?
- May be used when a clinician documents zika virus disease in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
đź©şClinical context
When commonly used
- Primary-care, urgent-care, emergency, infectious-disease, travel-medicine, neurology, inpatient, and follow-up documentation where mosquito-borne viral illness is part of the active assessment.
- Coding and utilization-review workflows where the chart identifies the specific virus or documents West Nile neurologic involvement and that detail changes final code specificity.
Common management context
- Evaluation often includes travel or exposure history, symptom review for fever, rash, arthralgia, headache, and neurologic findings, viral testing review, supportive-care planning, and public-health or infectious-disease follow-up when indicated.
- Documentation usually becomes more specific when the chart identifies the virus directly, or in West Nile cases clarifies encephalitis versus another neurologic manifestation versus other complications.
- Specialist context already linked on this page includes Infectious Disease Specialist, General Physician.
🔍Key distinctions
Important notes
- This ICD-10 family captures several distinct mosquito-borne viral infections rather than a single virus alone.
- Virus identity matters strongly here, and within West Nile infection the presence and type of neurologic involvement are additional specificity drivers.
- Zika virus disease is coded separately from West Nile and other mosquito-borne viral-fever branches because the documented virus changes code specificity and can carry distinct pregnancy-related considerations.
- Documentation that describes mosquito-borne viral fever is coded differently from non-mosquito-borne viral infections, bacterial meningitis, or nonspecific febrile illness because the vector-borne virus and any documented neurologic or other complication pattern drive final code selection.
Important exclusions
- congenital Zika virus disease (P35.4)
Related codes to consider
A92.0Chikungunya virus disease
Related mosquito-borne-viral-fever ICD-10 code; documentation often becomes more specific when the chart identifies the virus directly or clarifies West Nile neurologic involvement.
A92.1O'nyong-nyong fever
Related mosquito-borne-viral-fever ICD-10 code; documentation often becomes more specific when the chart identifies the virus directly or clarifies West Nile neurologic involvement.
A92.2Venezuelan equine fever
Related mosquito-borne-viral-fever ICD-10 code; documentation often becomes more specific when the chart identifies the virus directly or clarifies West Nile neurologic involvement.
A92.3West Nile virus infection
Related mosquito-borne-viral-fever ICD-10 code; documentation often becomes more specific when the chart identifies the virus directly or clarifies West Nile neurologic involvement.
Code hierarchy
chapter
1Certain infectious and parasitic diseases (A00-B99)
block
A90-A99Arthropod-borne viral fevers and viral hemorrhagic fevers
category
A92Other mosquito-borne viral fevers
currentA92
Official coding notes
Inclusion terms
- Zika virus fever
- Zika virus infection
- Zika NOS
Excludes1 (do not code together)
- congenital Zika virus disease (P35.4)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
Infectious Disease SpecialistGeneral Physician
Related codes
Sibling codes
Coverage-related procedures and services
CPT 86790high
ANTIBODY; VIRUS, NOT ELSEWHERE SPECIFIED
Source: CMS coverage guidance
CPT 86794high
ANTIBODY; ZIKA VIRUS, IGM
Source: CMS coverage guidance
CPT 95700high
ELECTROENCEPHALOGRAM (EEG) CONTINUOUS RECORDING, WITH VIDEO WHEN PERFORMED, SETUP, PATIENT EDUCATION, AND TAKEDOWN WHEN PERFORMED, ADMINISTERED IN PERSON BY EEG TECHNOLOGIST, MINIMUM OF 8 CHANNELS
Source: CMS coverage guidance
CPT 95705high
ELECTROENCEPHALOGRAM (EEG), WITHOUT VIDEO, REVIEW OF DATA, TECHNICAL DESCRIPTION BY EEG TECHNOLOGIST, 2-12 HOURS; UNMONITORED
Source: CMS coverage guidance
CPT 95708high
ELECTROENCEPHALOGRAM (EEG), WITHOUT VIDEO, REVIEW OF DATA, TECHNICAL DESCRIPTION BY EEG TECHNOLOGIST, EACH INCREMENT OF 12-26 HOURS; UNMONITORED
Source: CMS coverage guidance
CPT 87801high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA), MULTIPLE ORGANISMS; AMPLIFIED PROBE(S) TECHNIQUE
Source: CMS coverage guidance
Coding guidelines
Common synonyms
Zika virus disease
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.