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ICD10BillableValid for clinical use

ICD-10 Code Z20.822: Contact with and (suspected) exposure to COVID-19

Z20.822 is a billable ICD-10 diagnosis code used to classify Contact with and (suspected) exposure to COVID-19 in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. 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 Factors influencing health status and contact with health services (Z00-Z99).

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 Factors influencing health status and contact with health services (Z00-Z99).

When is it used?

  • May be used when a clinician documents contact with and (suspected) exposure to covid-19 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.

Code hierarchy

chapter
21Factors influencing health status and contact with health services (Z00-Z99)
block
Z20-Z29Persons with potential health hazards related to communicable diseases
category
Z20Contact with and (suspected) exposure to communicable diseases
category
Z20.8Contact with and (suspected) exposure to other communicable diseases
category
Z20.82Contact with and (suspected) exposure to other viral communicable diseases
currentZ20.82

Official coding notes

Inclusion terms
  • Contact with and (suspected) exposure to SARS-CoV-2

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

General Physician

Coverage-related procedures and services

CPT 87428high
INFECTIOUS AGENT ANTIGEN DETECTION BY IMMUNOASSAY TECHNIQUE (EG, ENZYME IMMUNOASSAY [EIA], ENZYME-LINKED IMMUNOSORBENT ASSAY [ELISA], FLUORESCENCE IMMUNOASSAY [FIA], IMMUNOCHEMILUMINOMETRIC ASSAY [IMCA]), QUALITATIVE OR SEMIQUANTITATIVE; SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS (EG, SARS-COV, SARS-COV-2 [COVID-19]) AND INFLUENZA VIRUS TYPES A AND B
Source: CMS coverage guidance
CPT 87631high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); RESPIRATORY VIRUS (EG, ADENOVIRUS, INFLUENZA VIRUS, CORONAVIRUS, METAPNEUMOVIRUS, PARAINFLUENZA VIRUS, RESPIRATORY SYNCYTIAL VIRUS, RHINOVIRUS), INCLUDES MULTIPLEX REVERSE TRANSCRIPTION, WHEN PERFORMED, AND MULTIPLEX AMPLIFIED PROBE TECHNIQUE, MULTIPLE TYPES OR SUBTYPES, 3-5 TARGETS
Source: CMS coverage guidance
CPT 87636high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]) AND INFLUENZA VIRUS TYPES A AND B, MULTIPLEX AMPLIFIED PROBE TECHNIQUE
Source: CMS coverage guidance
CPT 87637high
INFECTIOUS AGENT DETECTION BY NUCLEIC ACID (DNA OR RNA); SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]), INFLUENZA VIRUS TYPES A AND B, AND RESPIRATORY SYNCYTIAL VIRUS, MULTIPLEX AMPLIFIED PROBE TECHNIQUE
Source: CMS coverage guidance
CPT 87812high
INFECTIOUS AGENT ANTIGEN DETECTION BY IMMUNOASSAY WITH DIRECT OPTICAL (IE, VISUAL) OBSERVATION; SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]) AND INFLUENZA VIRUS TYPES A AND B
Source: CMS coverage guidance
CPT 87913high
INFECTIOUS AGENT GENOTYPE ANALYSIS BY NUCLEIC ACID (DNA OR RNA); SEVERE ACUTE RESPIRATORY SYNDROME CORONAVIRUS 2 (SARS-COV-2) (CORONAVIRUS DISEASE [COVID-19]), MUTATION IDENTIFICATION IN TARGETED REGION(S)
Source: CMS coverage guidance

Coding guidelines

Common synonyms

Contact with and (suspected) exposure to COVID-19Contact with andContact with and suspected exposure to COVID-19

Frequently asked questions

Code details

CodeZ20.822
SystemICD10
Display nameContact with and (suspected) exposure to COVID-19
ChapterFactors influencing health status and contact with health services (Z00-Z99)
BlockPersons with potential health hazards related to communicable diseases

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
COVID-19COVID-19Contact(with)Contact(with)Contact(with)Exposure(to)Exposure(to)Exposure(to)

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.