We wish to revise our prior publication "Consensus Report on the Detailed Fetal Anatomic Ultrasound Examination: Indications, Components, and Qualifications." 1,2 In the text and in Table 1, we refer to "Increased body mass index (≥35 kg/m 2 )." Both of the cited publications 3,4 quote articles that use varied definitions of obesity based on prepregnancy or early pregnancy body mass index (BMI) but are closer to the more standard definition of BMI ≥30 kg/m 2 , which should therefore be the definition of obesity for the purposes of indicating a Current Procedural Terminology (CPT) code 76811 examination.We realize that there are important policy implications considering the increasing rate of obesity in the pregnant population; however, we also believe that fidelity to evidence-based medicine requires recognition of true risk factors. If a larger portion of the population is being exposed to a particular risk, we must still take appropriate diagnostic steps, such as recommending a 76811 sonographic examination in that group. Table 1 should be updated to reflect the same wording. The correct coding for obesity in pregnancy per the International Classification of Diseases, Ninth Revision (ICD-9) is 649.13, 278.00 (for BMI 30-39.9) or 278.01 (for BMI ≥40), and V85.35-V85.45. In ICD-10, obesity in pregnancy is O00.210-O99-215 and E66.0-E66.9, depending on the actual BMI. References 1. AIUM. Consensus report on the detailed fetal anatomic ultrasound examination: indications, components, and qualifications. J Ultrasound Med 2014;33:189-195. 2. AIUM. Consensus report on the detailed fetal anatomic ultrasound examination: indications, components, and qualifications. J Diag Med Sonography 2014;30:107-113. 3. Rasmussen SA, Chu SY, Kim SY, Schmid CH, Lau J. Maternal obesity and risk of neural tube defects: a metaanalysis. Am J Obstet Gynecol 2008;198:611-619. 4. Stothard KJ, Tennant PW, Bell R, Rankin J. Maternal overweight and obesity and the risk of congenital anomalies: a systematic review and metaanalysis. JAMA 2009;301:636-650.