Z20
Non-billableContact w and (suspected) exposure to communicable diseases
Contact with and (suspected) exposure to communicable diseases
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- •carrier of infectious diseaseZ22
- diagnosed current infectious or parasitic disease -see Alphabetic Index
Excludes 2
Conditions not included here, but the patient may have both
Child Codes (10)
Z20.0Contact w and exposure to intestinal infectious diseases
Z20.1Contact with and (suspected) exposure to tuberculosis
Z20.2Contact w and exposure to infect w a sexl mode of transmiss
Z20.3Contact with and (suspected) exposure to rabies
Z20.4Contact with and (suspected) exposure to rubella
Z20.5Contact with and (suspected) exposure to viral hepatitis
Z20.6Contact w and (suspected) exposure to human immunodef virus
Z20.7Cntct w & expsr to pediculosis, acariasis & oth infestations
Z20.8Contact w and exposure to oth communicable diseases
Z20.9Contact w and exposure to unsp communicable disease
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for contact w and (suspected) exposure to communicable diseases?
The ICD-10-CM code for contact w and (suspected) exposure to communicable diseases is Z20. The full clinical description is "Contact with and (suspected) exposure to communicable diseases". Z20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code Z20 mean?
ICD-10-CM code Z20 represents “Contact with and (suspected) exposure to communicable diseases”. It is classified under Chapter 22: Factors Influencing Health Status and Contact With Health Services and is a non-billable header code. Use a more specific child code for billing purposes.
Is Z20 a billable code?
No, Z20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under Z20.
What chapter is Z20 in?
Z20 is in Chapter 22: Factors Influencing Health Status and Contact With Health Services (codes Z00-Z99).
What codes cannot be used with Z20?
Z20 has Excludes1 notes indicating codes that cannot be used together with it, including: carrier of infectious disease (Z22.-); diagnosed current infectious or parasitic disease -see Alphabetic Index.
What are the subcategories under Z20?
Z20 has 10 child codes, including: Z20.0 (Contact w and exposure to intestinal infectious diseases), Z20.1 (Contact with and (suspected) exposure to tuberculosis), Z20.2 (Contact w and exposure to infect w a sexl mode of transmiss), Z20.3 (Contact with and (suspected) exposure to rabies), and 6 more.
What are the UMLS CUIs for Z20?
Z20 is linked to 1 UMLS Concept Unique Identifier: C2910643. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Z20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like contact w and (suspected) exposure to communicable diseases affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Z20?
Z20 maps to the ICD-11 code: QC90.Z (Contact with or exposure to communicable diseases, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.