Z34.02
BillableEncounter for supervision of normal first pregnancy, second trimester
Last updated: FY2026 ICD-10-CM (Oct 1, 2025 – Sep 30, 2026) | CMS-HCC V28 (100% phase-in, PY2026)
Is Z34.02 an HCC code?
No. Z34.02 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z34.02 is the ICD-10-CM diagnosis code for encounter for supervision of normal first pregnancy, second trimester. A routine prenatal visit for a woman who is pregnant for the first time during the second trimester (weeks 14-20). Z34.02 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering persons encountering health services in circumstances related to reproduction (z30-z39).
Z34.02 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
Verify the trimester from the last menstrual period or ultrasound dating to ensure accurate code assignment.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z34.02 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •Verify the trimester from the last menstrual period or ultrasound dating to ensure accurate code assignment.
- •Document any screening results or findings from second trimester visits separately if complications are identified.