ICD-10-CM category
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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