Z20.9
✓ Billable
Contact with and (suspected) exposure to unspecified communicable disease
ICD-10-CM · FY2026 · Factors Influencing Health Status
Code
Z20.9
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Factors Influencing Health Status
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code Z20.9?
ICD-10-CM code Z20.9 represents Contact with and (suspected) exposure to unspecified communicable disease. It is a billable diagnosis code in the Factors Influencing Health Status chapter, effective October 1, 2025 – September 30, 2026.
Is Z20.9 billable?
Yes. Z20.9 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is Z20.9 in?
Z20.9 belongs to the Factors Influencing Health Status chapter (Z00–Z99) of ICD-10-CM.
Related codes in the Z20 category
Z20
Contact with and (suspected) exposure to communicable diseases
Non-billable
Z20.0
Contact with and (suspected) exposure to intestinal infectious diseases
Non-billable
Z20.1
Contact with and (suspected) exposure to tuberculosis
Billable
Z20.2
Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmission
Billable
Z20.3
Contact with and (suspected) exposure to rabies
Billable
Z20.4
Contact with and (suspected) exposure to rubella
Billable
Z20.5
Contact with and (suspected) exposure to viral hepatitis
Billable
Z20.6
Contact with and (suspected) exposure to human immunodeficiency virus [HIV]
Billable
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