Z20.820

Z20.820: Contact with and (suspected) exposure to varicella

Billable / specific codeICD-10-CM

Z20.820 is a billable, specific ICD-10-CM code for contact with and (suspected) exposure to varicella. It is valid for submission on a claim.

Check Z20.820 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above Z20.820

A category’s note binds every code beneath it.

Written on Z20: Contact with and (suspected) exposure to communicable diseases

carrier of infectious disease (Z22.-)
diagnosed current infectious or parasitic disease -see Alphabetic Index

Excludes2 inherited from the categories above Z20.820

Not part of this code, but both may be coded when both are present.

Written on Z20: Contact with and (suspected) exposure to communicable diseases

personal history of infectious and parasitic diseases (Z86.1-)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

Z20.820 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A57554Billing and Coding: Immune Globulins

Alphabetic index entries that lead here

Contact›varicella
Exposure›varicella

Code history

Unchanged in every release from FY2024 to FY2027.