ICD-10-CM>O00-O9A>O20-O29>O21O21Excessive vomiting in pregnancyNon-Billable/Non-SpecificCodesO21.0Mild hyperemesis gravidarumO21.1Hyperemesis gravidarum with metabolic disturbanceO21.2Late vomiting of pregnancyO21.8Other vomiting complicating pregnancyO21.9Vomiting of pregnancy, unspecified