O21.1

Billable

Hyperemesis gravidarum with metabolic disturbance

O21.1 is the ICD-10-CM code for Hyperemesis gravidarum with metabolic disturbance. It is a billable, specific code valid for reimbursement.

Status
Billable
Chapter
O00-O9A
Parent
O21
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

Includes

  • 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

Frequently asked questions

What is ICD-10 code O21.1?
O21.1 is the ICD-10-CM code for "Hyperemesis gravidarum with metabolic disturbance". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O21.1 a billable code?
Yes — O21.1 is a billable, specific ICD-10-CM code valid for reimbursement.

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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