Z11: Encounter for screening for infectious and parasitic diseases

Codes under Z11 (Encounter for screening for infectious and parasitic diseases). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
Z11.0	Encounter for screening for intestinal infectious diseases	✓
Z11.1	Encounter for screening for respiratory tuberculosis	✓
Z11.2	Encounter for screening for other bacterial diseases	✓
Z11.3	Encounter for screening for infections with a predominantly sexual mode of transmission	✓
Z11.4	Encounter for screening for human immunodeficiency virus [HIV]	✓
Z11.5	Encounter for screening for other viral diseases	—
Z11.6	Encounter for screening for other protozoal diseases and helminthiases	✓
Z11.7	Encounter for testing for latent tuberculosis infection	✓
Z11.8	Encounter for screening for other infectious and parasitic diseases	✓
Z11.9	Encounter for screening for infectious and parasitic diseases, unspecified	✓
Z11.51	Encounter for screening for human papillomavirus (HPV)	✓
Z11.52	Encounter for screening for COVID-19	✓
Z11.59	Encounter for screening for other viral 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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