MCMCB Pro
Z12

Z12Encounter for screening for malignant neoplasms

Non-billable headerICD-10-CM

Z12 is a non-billable header ICD-10-CM code for encounter for screening for malignant neoplasms. 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

Use additional code

Add a secondary code to capture the detail described below.

  • code to identify any family history of malignant neoplasm (Z80.-)

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 Z12

These codes carry an Excludes1 note pointing at Z12. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading Z12 alone.

  • Z01.41Encounter for routine gynecological examination

Risk adjustment

Z12 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 Z12

10 child codes. Green means billable.

Questions about Z12

Is Z12 a billable ICD-10-CM code?
No. Z12 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does Z12 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 Z12?
Z12 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.