Z20: Contact with and (suspected) exposure to communicable diseases

Codes under Z20 (Contact with and (suspected) exposure to communicable diseases). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
Z20.0	Contact with and (suspected) exposure to intestinal infectious diseases	—
Z20.01	Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)	✓
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	—
Z20.09	Contact with and (suspected) exposure to other intestinal infectious diseases	✓
Z20.9	Contact with and (suspected) exposure to unspecified communicable disease	✓
Z20.81	Contact with and (suspected) exposure to other bacterial communicable diseases	—
Z20.82	Contact with and (suspected) exposure to other viral communicable diseases	—
Z20.89	Contact with and (suspected) exposure to other communicable diseases	✓
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	✓
Z20.820	Contact with and (suspected) exposure to varicella	✓
Z20.821	Contact with and (suspected) exposure to Zika virus	✓
Z20.822	Contact with and (suspected) exposure to COVID-19	✓
Z20.828	Contact with and (suspected) exposure to other viral communicable diseases	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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