Z20.9 Contact with and (suspected) exposure to unspecified communicable disease
ICD-10-CM · CMS code reference
Official ICD-10-CM description: Contact with and (suspected) exposure to unspecified communicable disease
Coding notes
From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.
Excludes1
Not coded together with this code. The exception is when the two conditions are unrelated to each other.
- carrier of infectious disease (Z22.-)
- diagnosed current infectious or parasitic disease -see Alphabetic Index
Excludes2
Not part of this code, but both can be coded when both are documented.
- personal history of infectious and parasitic diseases (Z86.1-)
Related codes
Z20.810Contact with and (suspected) exposure to anthrax ICD-10-CMZ20.811Contact with and (suspected) exposure to meningococcus ICD-10-CMZ20.818Contact with and (suspected) exposure to other bacterial communicable diseases ICD-10-CMZ20.820Contact with and (suspected) exposure to varicella ICD-10-CMZ20.821Contact with and (suspected) exposure to Zika virus ICD-10-CMZ20.822Contact with and (suspected) exposure to COVID-19 ICD-10-CMZ20.828Contact with and (suspected) exposure to other viral communicable diseases ICD-10-CMZ20.89Contact with and (suspected) exposure to other communicable diseases ICD-10-CM
Common questions
Is Z20.9 a billable code?
Yes. Z20.9 is a billable ICD-10-CM code in the ICD-10-CM FY2027 (effective October 1, 2026) code set.