O21.1

ICD-10Billable

Hyperemesis gravidarum with metabolic disturbance

Official ICD-10-CM descriptor (FY2026)

Hyperemesis gravidarum with metabolic disturbance

O21.1 is valid for submission on a claim — CMS flags it as a billable, specific code.

Inclusion terms

  • Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as carbohydrate depletion
  • Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as dehydration
  • Hyperemesis gravidarum, starting before the end of the 20th week of gestation, with metabolic disturbance such as electrolyte imbalance

Related codes in O21

Where this code sits

Parent code
O21

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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