Is O21.1 a billable ICD-10 code?

Yes. O21.1 (Hyperemesis gravidarum with metabolic disturbance) is billable and can be used for insurance claims. Always verify payer-specific requirements.

O21.1 ✓ Billable

Hyperemesis gravidarum with metabolic disturbance

Q: What is ICD-10 code O21.1?

ICD-10-CM code O21.1 stands for "Hyperemesis gravidarum with metabolic disturbance". It is a billable code in the Pregnancy, Childbirth and the Puerperium chapter, effective FY2026 (Oct 1, 2025 – Sep 30, 2026).

ICD-10-CM · FY2026 · Pregnancy, Childbirth and the Puerperium

Code

O21.1

System

ICD-10-CM

Billable

Yes — valid for submission

Effective

FY2026

Chapter

Pregnancy, Childbirth and the Puerperium

Source

CMS / CDC NCHS

⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.

Frequently asked questions

What is ICD-10 code O21.1?

ICD-10-CM code O21.1 represents Hyperemesis gravidarum with metabolic disturbance. It is a billable diagnosis code in the Pregnancy, Childbirth and the Puerperium chapter, effective October 1, 2025 – September 30, 2026.

Is O21.1 billable?

Yes. O21.1 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.

What chapter is O21.1 in?

O21.1 belongs to the Pregnancy, Childbirth and the Puerperium chapter (O00–O9A) of ICD-10-CM.

Related codes in the O21 category

O21 Excessive vomiting in pregnancy Non-billable O21.0 Mild hyperemesis gravidarum Billable O21.2 Late vomiting of pregnancy Billable O21.8 Other vomiting complicating pregnancy Billable O21.9 Vomiting of pregnancy, unspecified Billable

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