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ICD-10-CM Code O21.0
Mild hyperemesis gravidarum

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
Female Only
Female Only
Code is only used for female patients.
Maternity Only
Maternity Only
Code is only used for diagnoses related to pregnancy.
| ICD-10 from 2011 - 2016

O21.0 is a billable ICD code used to specify a diagnosis of mild hyperemesis gravidarum. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code O210 is used to code Morning sickness

Morning sickness, also called nausea and vomiting of pregnancy (NVP), nausea gravidarum, emesis gravidarum, and pregnancy sickness, is a pregnancy discomfort that affects more than half of all pregnant women. Symptoms may be present early in the morning and reduce as the day progresses. However, in spite of its common name, nausea and vomiting of pregnancy can occur at any time during the day. For most women the sickness ends around the 12th week of pregnancy (the end of the first trimester).

Specialty: Obstetrics
ICD 9 Code: 643.0
Source: Wikipedia

Coding Notes for O21.0 Info for medical coders on how to properly use this ICD-10 code

Inclusion Terms:
Inclusion Terms
Inclusion Terms are a list of concepts for which a specific code is used. The list of Inclusion Terms is useful for determining the correct code in some cases, but the list is not necessarily exhaustive.
Hyperemesis gravidarum, mild or unspecified, starting before the end of the 20th week of gestation

MS-DRG Mapping

  • DRG Group #781 - Other antepartum diagnoses with medical complications.

ICD-10-CM Alphabetical Index References for 'O21.0 - Mild hyperemesis gravidarum'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code O21.0. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Mild hyperemesis gravidarum, antepartum condition or complication (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code O21.0 and a single ICD9 code, 643.03 is an approximate match for comparison and conversion purposes.


Parent Code: O21 - Excessive vomiting in pregnancy

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/O210