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Ob-Gyn Coding Alert

Ob-Gyn Coding:

Use This Advice for Dx Sequencing for a Viability Ultrasound in an AMA Pregnancy

Published on Thu May 21, 2026

Beware of reporting AMA without trimester specificity. A subscriber recently asked, “If a patient presents for a viability ultrasound and is also advanced maternal age (AMA) or otherwise high risk, should you code Z36.87 (Encounter for antenatal screening for uncertain dates) first, or should the high-risk pregnancy code, such as O09.521 (Supervision of elderly multigravida, first trimester), be primary?” This [...]
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