ICD-10-CM 2026 · Effective October 1, 2025

ICD-10 Z20.821

Billable / Specific

Contact with and (suspected) exposure to Zika virus

Z20
Block
0
Synonyms
5
LCDs
1
Payer Policies
0
Linked CPTs

About ICD-10-CM Z20.821

ICD-10-CM code Z20.821 represents Contact with and (suspected) exposure to Zika virus. This is a billable/specific code in the Factors Influencing Health Status chapter (block Z20). The 2026 edition of ICD-10-CM Z20.821 became effective on October 1, 2025.

Medicare LCD Coverage for Z20.821

Local Coverage Determinations (LCDs) from CMS MACs that list Z20.821 as a covered diagnosis.

5 LCDs

Showing top 5. Click a CPT for full coverage scope.

CMS LCD: Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Article ID: 55326, Effective: 2025-11-06 00:00:00, 128 covered, 0 non-covered
CPT 87801 →
CMS LCD: Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Article ID: 55326, Effective: 2025-11-06 00:00:00, 128 covered, 0 non-covered
CPT 87798 →
CMS LCD: Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Article ID: 55326, Effective: 2025-11-06 00:00:00, 128 covered, 0 non-covered
CPT 86794 →
CMS LCD: Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Article ID: 55326, Effective: 2025-11-06 00:00:00, 128 covered, 0 non-covered
CPT 87662 →
CMS LCD: Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Article ID: 55326, Effective: 2025-11-06 00:00:00, 128 covered, 0 non-covered
CPT 86790 →

Commercial Payer Coverage

Coverage policies from major commercial payers referencing Z20.821.

1 policies

1 Medicare

Billing and Coding: Zika Virus Testing by PCR and ELISA Methods
Policy ID: ART-55326

CPT Codes Commonly Billed with Z20.821

Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.

No procedure linkages on file for Z20.821

We don't have CPT pairings indexed for this specific code yet. Use the CPT search above to find common procedures, or check your payer's published medical policy for code-specific guidance.

Codes Adjacent To Z20.821

Other codes in section Z20-Z29 (Persons with potential health hazards related to communicable diseases).

Z20 Contact with and (suspected) exposure to communicable diseases (non-billable) Z20.0 Contact with and (suspected) exposure to intestinal infectious diseases (non-billable) Z20.01 Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli) Z20.09 Contact with and (suspected) exposure to other intestinal infectious diseases Z20.1 Contact with and (suspected) exposure to tuberculosis Z20.2 Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission Z20.3 Contact with and (suspected) exposure to rabies Z20.4 Contact with and (suspected) exposure to rubella Z20.5 Contact with and (suspected) exposure to viral hepatitis Z20.6 Contact with and (suspected) exposure to human immunodeficiency virus [HIV] Z20.7 Contact with and (suspected) exposure to pediculosis, acariasis and other infestations Z20.8 Contact with and (suspected) exposure to other communicable diseases (non-billable) Z20.81 Contact with and (suspected) exposure to other bacterial communicable diseases (non-billable) Z20.810 Contact with and (suspected) exposure to anthrax Z20.811 Contact with and (suspected) exposure to meningococcus Z20.818 Contact with and (suspected) exposure to other bacterial communicable diseases Z20.82 Contact with and (suspected) exposure to other viral communicable diseases (non-billable) Z20.820 Contact with and (suspected) exposure to varicella Z20.822 Contact with and (suspected) exposure to COVID-19 Z20.828 Contact with and (suspected) exposure to other viral communicable diseases

ICD-10 Z20.821, Billing FAQ

Is ICD-10 code Z20.821 billable? +

Yes, Z20.821 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.

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Reviewed by the PayerReady Medical Coding Team

Verified against the CMS 2026 code set on May 31, 2026.

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