2026 ICD-10-CM Diagnosis Code Z20.828Contact with and (suspected) exposure to other viral communicable diseases

ICD-10-CM Codes›Z00–Z99›Z20-Z29›suspected

ICD-10-CM Z20.828
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z20.828 is a billable ICD-10-CM diagnosis code for contact with and (suspected) exposure to other viral communicable diseases. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Exposure, encounters, screening or contact with infectious disease.

Code Identity

ICD-10-CM Code
Z20.828
Billable Status
Yes — Valid for Submission
Code Describes
Contact with and (suspected) exposure to other viral communicable diseases
Short Description
Contact w and exposure to oth viral communicable diseases
Parent Code
Z20.82
Contact with and (suspected) exposure to other viral communicable diseases

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ20-Z29Persons with potential health hazards related to communicable diseases
CategorysuspectedContact with and exposure to communicable diseases (Z20)
This CodeZ20.828Contact with and (suspected) exposure to other viral communicable diseases

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute poliomyelitis suspected
  • Coronavirus infection suspected
  • Dengue suspected
  • Ebola virus disease suspected
  • Exposure to anogenital Herpes simplex virus
  • Exposure to coronavirus infection
  • Exposure to cytomegalovirus
  • Exposure to Ebola virus
  • Exposure to European tick-borne encephalitis virus
  • Exposure to herpes simplex virus
  • Exposure to Human poliovirus
  • Exposure to Influenza A virus subtype H1N1
  • Exposure to influenzavirus
  • Exposure to Measles virus
  • Exposure to meningitis
  • Exposure to monkeypox virus
  • Exposure to Mumps virus
  • Exposure to Severe acute respiratory syndrome coronavirus
  • Exposure to Variola virus
  • Exposure to viral disease
  • Exposure to viral meningitis
  • Measles suspected
  • Monkeypox suspected
  • Mumps suspected
  • Occupational exposure to monkeypox virus
  • Severe acute respiratory syndrome suspected
  • Smallpox suspected
  • Suspected infection caused by novel Influenza A virus variant
  • Suspected soft tissue infection
  • Viral hemorrhagic fever suspected
  • Viral infection of skin suspected
  • Yellow fever suspected

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Contact(with)
      • communicable disease
        • viral NEC
    • Contact(with)
      • viral disease NEC
    • Exposure(to)
      • communicable disease
        • viral NEC
    • Exposure(to)
      • viral disease NEC

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC016
Exposure, encounters, screening or contact with infectious disease
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

Viral Infections

Viruses are very tiny germs. They are made of genetic material (either DNA or RNA) inside of a protein coating. There are a huge number of viruses on earth. Only a small number of them can infect humans. Those viruses can infect our cells, which may cause disease.

The full article covers:

  • What are viruses?
  • How are viruses spread?
  • How do viruses cause disease?
  • What are the treatments for viral infections?
  • Can viral infections be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z20.828 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V01.79 Viral dis contact NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z20.828Overview

Is Z20.828 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report contact with and (suspected) exposure to other viral communicable diseases on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of Z20.828?

Under the General Equivalence Mappings, contact with and (suspected) exposure to other viral communicable diseases converts to ICD-9-CM V01.79 (viral dis contact NEC). The mapping is approximate, so confirm the match fits the documentation.