Is Z11 a billable ICD-10-CM code?

No. Z11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.

Where does Z11 sit in the tabular list?

Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).

What cannot be coded together with Z11?

Z11 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.

Z11

Z11 — Encounter for screening for infectious and parasitic diseases

Non-billable headerICD-10-CM

Z11 is a non-billable header ICD-10-CM code for encounter for screening for infectious and parasitic diseases. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1 — never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

encounter for diagnostic examination-code to sign or symptom

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Screening is the testing for disease or disease precursors in asymptomatic individuals so that early detection and treatment can be provided for those who test positive for the disease.

Other codes that can never be billed with Z11

These codes carry an Excludes1 note pointing at Z11. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z11 alone.

Z13.83Encounter for screening for respiratory disorder NEC
Z13.811Encounter for screening for lower gastrointestinal disorder

Risk adjustment

Z11 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead Z11

10 child codes. Green means billable.

Questions about Z11

Is Z11 a billable ICD-10-CM code?: No. Z11 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z11 sit in the tabular list?: Factors influencing health status and contact with health services (Z00-Z99), in the block Persons encountering health services for examinations (Z00-Z13).
What cannot be coded together with Z11?: Z11 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.