Z20 is a non-billable/non-specific diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Contact with and (suspected) exposure to communicable diseases.
Type 1 excludes
Carrier of infectious disease (Z22.-)
Diagnosed current infectious or parasitic disease -see Alphabetic Index
Type 2 excludes
Personal history of infectious and parasitic diseases (Z86.1-)
Codes
Z20.0
Contact with and (suspected) exposure to intestinal infectious diseases
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
Z20.9
Contact with and (suspected) exposure to unspecified communicable disease
Versions
2026
No changes
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code