MCMedicalCodingSoftware
Z3A.0

Z3A.0: Weeks of gestation of pregnancy, unspecified or less than 10 weeks

Non-billable headerICD-10-CM

Z3A.0 is a non-billable header ICD-10-CM code for weeks of gestation of pregnancy, unspecified or less than 10 weeks. It cannot be billed on its own: choose one of the more specific child codes below.

Risk adjustment

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

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Z3A.0

4 child codes. Green means billable.

Other codes under Z3A

ICD-10-CMFY2027· effective October 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.