Question: The ob-gyn routinely performs an ultrasound (US) at 7-9 weeks (76801) to check the number of fetal sacs as well as checking for fetal heart tones. Is this diagnosis V28.3? She also routinely performs an US (76815) for a single pregnancy at 28 weeks to check if fetal growth matches estimate date of confinement (EDC). The diagnosis I would use for that is V28.81. Is that correct? California Subscriber Answer: For that first exam at 7-9 weeks, you can use V28.3 (Encounter for routine screening for malformation using ultrasonics). But code V28.81 (Encounter for fetal anatomic survey) is for a fetal anatomic survey and is more appropriate to report with 76805/+76810 (Ultrasound, pregnant uterus, real time with image documentation, fetal and maternal evaluation, after first trimester [> or = 14 weeks 0 days], transabdominal approach; single or first gestation). Correct options: If your ob suspects size/date discrepancy but rules it out, you can report V89.04 (Suspected problem with fetal growth not found). To check for size/date discrepancy that the ob-gyn does not rule out, the code is 649.63 (Uterine size date discrepancy; antepartum condition or complication). If the fetus appears larger or smaller than normal in relation to the EDC, then 656.53 (Poor fetal growth, affecting management of mother; antepartum condition or complication) or 656.63 (Excessive fetal growth affecting management of mother antepartum) are the correct options. If the ob-gyn is performing this US as a screening in the absence of any other medical indication and a complete anatomic survey was documented, you can report V28.81 (Encounter for fetal anatomic survey). Watch out: Remember: ICD-10: V28.81and V28.3 = Z36 (Encounter for antenatal screening of mother). Note that in ICD-10, you do not differentiate the reason for the screening the way you do in ICD-9. 649.63 = O26.84X (Uterine size-date discrepancy complicating pregnancy) 656.53 = O36.59X0 (Maternal care for other known or suspected poor fetal growth) 656.63 = O36.6Xx0 (Maternal care for excessive fetal growth) V89.04 = Z03.74 (Encounter for suspected problem with fetal growth ruled out). Note: