What is the ICD-10 code for nausea and vomiting in pregnancy?

The ICD-10 code for nausea and vomiting in pregnancy is primarily O21, with specific codes like O21.0 for mild cases and O21.1 for cases with metabolic disturbance.

How do you code hyperemesis gravidarum?

Hyperemesis gravidarum is coded as O21.1 when metabolic disturbances are present, and O21.0 for mild cases without such disturbances.

ICD-10 Coding for Nausea and Vomiting in Pregnancy(O21.0, O21.1, O21.9)

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Explore ICD-10 coding for nausea and vomiting in pregnancy, including hyperemesis gravidarum. Learn about documentation requirements and coding pitfalls.

Also known as:

Morning SicknessHyperemesis Gravidarum

Related ICD-10 Code Ranges

Complete code families applicable to Nausea and Vomiting in Pregnancy

O00-O9APrimary Range

Pregnancy, childbirth and the puerperium

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Code Comparison: When to Use Each Code

Compare key differences between these codes to ensure accurate selection

Code	Description	When to Use	Key Documentation
O21.0	Mild hyperemesis gravidarum	Use when the patient experiences mild vomiting with no significant metabolic disturbance.	Weight loss <5% No metabolic disturbance
O21.1	Hyperemesis gravidarum with metabolic disturbance	Use when there is severe vomiting with metabolic disturbances like electrolyte imbalance.	Hypokalemia (<3.5 mEq/L) Ketonuria Weight loss >5%
O21.9	Unspecified vomiting of pregnancy	Use when vomiting is related to pregnancy but does not meet criteria for O21.0 or O21.1.	Vomiting without specific criteria for hyperemesis

Primary ICD-10-CM Codes

Mild hyperemesis gravidarum

O21.0Billable

Differential Codes

Alternative codes to consider when ruling out similar conditions

Nausea and vomitingR11

Documentation & Coding Risks

Avoid these common issues when documenting Nausea and Vomiting in Pregnancy.

Failure to document metabolic disturbances

Impact

Clinical: Inaccurate clinical picture, Regulatory: Non-compliance with coding standards, Financial: Potential claim denials

Mitigation

Include lab results in documentation, Use structured templates

Using R11 for pregnancy-related vomiting

Impact

Reimbursement: Incorrect DRG assignment and potential claim denials., Compliance: Non-compliance with ICD-10 guidelines., Data Quality: Inaccurate clinical data representation.

Mitigation

Always verify the vomiting is related to pregnancy and use O21 codes.

Metabolic disturbance documentation

Impact

Lack of documentation for metabolic disturbances in hyperemesis gravidarum cases.

Mitigation

Use structured templates and checklists to ensure all necessary details are documented.

Frequently Asked Questions

Documentation requirements, coding pitfalls and FAQs for conditions coded with O21.0.

Primary Code

O21.0

Mild hyperemesis gravidarum

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ICD-10 codes3

Coding risks3

FAQs2

ICD-10 Coding for Nausea and Vomiting in Pregnancy(O21.0, O21.1, O21.9)

Documentation & Coding Risks

Frequently Asked Questions

What is the ICD-10 code for nausea and vomiting in pregnancy?

How do you code hyperemesis gravidarum?

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