ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
O20-O29 Other maternal disorders predominantly related to pregnancy /
O21 Excessive vomiting in pregnancy
Billable ICD-10-CM Code O21.1
O21.1
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Hyperemesis gravidarum with metabolic disturbance 
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Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as carbohydrate depletion
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Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as dehydration
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Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as electrolyte imbalance
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