Hyperemesis Gravidarum ICD-10-CM Codes | 2023

Read this short guide to learn about Hyperemesis Gravidarum ICD codes you can use!

By Bernard Ramirez on Aug 8, 2025.

What Hyperemesis Gravidarum ICD-10 codes can I use?

If you’re looking for Hyperemesis Gravidarum ICD codes, please note that there are only two that you can use. Here they are:

O21.0 - Mild hyperemesis gravidarum

This ICD-10 code is meant to be used on a female patient confirmed to have mild Hyperemesis Gravidarum. While Hyperemesis Gravidarum is a severe problem, the symptoms are not too bad.

O21.1 - Hyperemesis gravidarum with metabolic disturbance

This ICD-10 code is meant to be used on a female patient confirmed to have Hyperemesis Gravidarum that’s accompanied by metabolic disturbance, which means there is a negative alteration in the patient’s body that prevents them from processing and distributing essential macronutrients.

Are both these Hyperemesis Gravidarum ICD-10 codes billable?

Yes. Both ICD-10 codes for Hyperemesis Gravidarum are valid and billable.

Clinical information about Hyperemesis Gravidarum:

Pregnant women will feel morning sickness several times during their pregnancy. When they have morning sickness, they will feel nauseous and may even vomit.

Hyperemesis Gravidarum is an extreme form of morning sickness during pregnancy. It’s also potentially life-threatening.

A pregnant woman with Hyperemesis Gravidarum will still feel nauseous and will likely vomit multiple times in a single day. This is not good because intractable vomiting may cause significant weight loss and dehydration.

If they keep vomiting, not only will they lose weight, but they will also have deficiencies in electrolytes and nutrition. This can happen at any of the three trimesters, and it may even last for the whole pregnancy. If left untreated/unmanaged, it can severely impact both the mother and the baby.

Synonyms include:

Mild hyperemesis gravidarum
Moderate hyperemesis gravidarum
Hyperemesis during pregnancy
Vomiting during pregnancy
Intractable vomiting during pregnancy
Intractable hyperemesis during pregnancy
Hyperemesis gravidarum ICD 10
ICD 10 hyperemesis gravidarum
ICD 10 code for hyperemesis gravidarum
ICD 10 for hyperemesis gravidarum
Mild hyperemesis gravidarum ICD 10

Commonly asked questions

Even with current research efforts, it’s not known what indeed causes Hyperemesis Gravidarum. Currently, findings indicate increased hormone levels, specifically estrogen, and human chorionic gonadotropin, as the most likely reason.

Besides electrolyte deficiency, nutritional deficiency, and potential death, other complications include bleeding in the throat due to constant vomiting, low birth weight, and pre-term birth.

The best they can do is manage it. To reduce the impact of the problem’s symptoms, they should eat smaller meals, stay hydrated, avoid nauseating smells, and avoid their motion sickness triggers.

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