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ICD-10-CM Codes
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O00-O9A
Pregnancy, childbirth and the puerperium
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O20-O29
Other maternal disorders predominantly related to pregnancy
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O21-
Excessive vomiting in pregnancy
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2021 ICD-10-CM Diagnosis Code O21.8
2021 ICD-10-CM Diagnosis Code O21.8
Other vomiting complicating pregnancy
2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
- O21.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
- The 2021 edition of ICD-10-CM O21.8 became effective on October 1, 2020.
- This is the American ICD-10-CM version of O21.8 - other international versions of ICD-10 O21.8 may differ.
ICD-10-CM Coding Rules
- O21.8 is applicable to maternity patients aged 12 - 55 years inclusive.
Applicable To- Vomiting due to diseases classified elsewhere, complicating pregnancy
Use AdditionalUse Additional Help
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation. In most cases the manifestation codes will have in the code title, "in diseases classified elsewhere." Codes with this title are a component of the etiology/manifestation convention. The code title indicates that it is a manifestation code. "In diseases classified elsewhere" codes are never permitted to be used as first listed or principle diagnosis codes. They must be used in conjunction with an underlying condition code and they must be listed following the underlying condition.
The following code(s) above
O21.8 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
- Applicable To annotations, or
- Code Also annotations, or
- Code First annotations, or
- Excludes1 annotations, or
- Excludes2 annotations, or
- Includes annotations, or
- Note annotations, or
- Use Additional annotations
that may be applicable to
O21.8:
- 817 Other antepartum diagnoses with o.r. Procedures with mcc
- 818 Other antepartum diagnoses with o.r. Procedures with cc
- 819 Other antepartum diagnoses with o.r. Procedures without cc/mcc
- 831 Other antepartum diagnoses without o.r. Procedures with mcc
- 832 Other antepartum diagnoses without o.r. Procedures with cc
- 833 Other antepartum diagnoses without o.r. Procedures without cc/mcc
Convert O21.8 to ICD-9-CM
Code History
- 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
- 2017 (effective 10/1/2016): No change
- 2018 (effective 10/1/2017): No change
- 2019 (effective 10/1/2018): No change
- 2020 (effective 10/1/2019): No change
- 2021 (effective 10/1/2020): No change
- Pregnancy (single) (uterine) Z33.1 - see also Delivery and Puerperal
ICD-10-CM Diagnosis Code Z33.1
Pregnant state, incidental
2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
Applicable To- Pregnancy NOS
- Pregnant state NOS
Type 1 Excludes- complications of pregnancy (O00-O9A)
- pregnant state, gestational carrier (Z33.3)
- complicated by (care of) (management affected by)
- vomiting O21.9
ICD-10-CM Diagnosis Code O21.9
Vomiting of pregnancy, unspecified
2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
- due to diseases classified elsewhere O21.8
ICD-10-CM Codes Adjacent To O21.8
O16.5 Unspecified maternal hypertension, complicating the puerperium
O16.9 Unspecified maternal hypertension, unspecified trimester
O20 Hemorrhage in early pregnancy
O20.0 Threatened abortion
O20.8 Other hemorrhage in early pregnancy
O20.9 Hemorrhage in early pregnancy, unspecified
O21 Excessive vomiting in pregnancy
O21.0 Mild hyperemesis gravidarum
O21.1 Hyperemesis gravidarum with metabolic disturbance
O21.2 Late vomiting of pregnancy
O21.8
Other vomiting complicating pregnancy
O21.9 Vomiting of pregnancy, unspecified
O22 Venous complications and hemorrhoids in pregnancy
O22.0 Varicose veins of lower extremity in pregnancy
O22.00 …… unspecified trimester
O22.1 Genital varices in pregnancy
O22.10 …… unspecified trimester
Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.
