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ICD-10-CM · FY 2026 APRIL UPDATE

Z20

Contact with and (suspected) exposure to communicable diseases

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
Z20.0Contact with and (suspected) exposure to intestinal infectious diseasesCategory
Z20.01Contact with and (suspected) exposure to intestinal infectious diseases due to Escherichia coli (E. coli)Billable
Z20.09Contact with and (suspected) exposure to other intestinal infectious diseasesBillable
Z20.1Contact with and (suspected) exposure to tuberculosisBillable
Z20.2Contact with and (suspected) exposure to infections with a predominantly sexual mode of transmissionBillable
Z20.3Contact with and (suspected) exposure to rabiesBillable
Z20.4Contact with and (suspected) exposure to rubellaBillable
Z20.5Contact with and (suspected) exposure to viral hepatitisBillable
Z20.6Contact with and (suspected) exposure to human immunodeficiency virus [HIV]Billable
Z20.7Contact with and (suspected) exposure to pediculosis, acariasis and other infestationsBillable
Z20.8Contact with and (suspected) exposure to other communicable diseasesCategory
Z20.81Contact with and (suspected) exposure to other bacterial communicable diseasesCategory
Z20.810Contact with and (suspected) exposure to anthraxBillable
Z20.811Contact with and (suspected) exposure to meningococcusBillable
Z20.818Contact with and (suspected) exposure to other bacterial communicable diseasesBillable
Z20.82Contact with and (suspected) exposure to other viral communicable diseasesCategory
Z20.820Contact with and (suspected) exposure to varicellaBillable
Z20.821Contact with and (suspected) exposure to Zika virusBillable
Z20.822Contact with and (suspected) exposure to COVID-19Billable
Z20.828Contact with and (suspected) exposure to other viral communicable diseasesBillable
Z20.89Contact with and (suspected) exposure to other communicable diseasesBillable
Z20.9Contact with and (suspected) exposure to unspecified communicable diseaseBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.