O21.9
BillableVomiting of pregnancy, unspecified
Vomiting of pregnancy, unspecified
Coding Notes
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •mental and behavioral disorders associated with the puerperiumF53
- •obstetrical tetanusA34
- •postpartum necrosis of pituitary glandE23.0
- •puerperal osteomalaciaM83.0
- •maternal care related to the fetus and amniotic cavity and possible delivery problemsO30-O48
- •maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperiumO98-O99
Use Additional Code
Additional codes that should follow this code
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Related Codes(4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(38)
SNOMED CT
- N&V - Nausea and vomiting16932000
- N+V - Nausea and vomiting16932000
- Nausea and vomiting16932000
- Morning nausea51885006
- Morning sickness51885006
- Vomiting as reason for care in pregnancy90325002
- Vomiting of pregnancy90325002
- Hypertension AND/OR vomiting complicating pregnancy childbirth AND/OR puerperium106005003
- Nausea and vomiting in pregnancy1296685008
UMLS
- Unspecified vomiting of pregnancyC0269661
- Vomiting as reason for care in pregnancyC0269661
- Vomiting in pregnancyC0269661
- Vomiting of pregnancyC0269661
- Vomiting of pregnancy (disorder)C0269661
- Vomiting of pregnancy, unspecifiedC0269661
- emesis pregnancyC0269661
- pregnancy emesisC0269661
- pregnancy vomitingC0269661
- pregnancy vomitsC0269661
- vomiting in pregnancyC0269661
- vomiting of pregnancyC0269661
- vomiting pregnancyC0269661
Clinical Terms
- Hypertension AND/OR vomiting complicating pregnancy childbirth AND/OR puerperium
- pregnancy vomiting
- Vomiting as reason for care in pregnancy
- vomiting in pregnancy
- Nausea and vomiting in pregnancy
- Vomiting of pregnancy (disorder)
- pregnancy vomits
- Morning sickness
- Unspecified vomiting of pregnancy
- emesis pregnancy
- pregnancy emesis
- Nausea and vomiting
- N&V - Nausea and vomiting
- Morning nausea
- vomiting pregnancy
- N+V - Nausea and vomiting
Frequently Asked Questions
What is the ICD-10 code for vomiting of pregnancy, unspecified?
The ICD-10-CM code for vomiting of pregnancy, unspecified is O21.9. The full clinical description is "Vomiting of pregnancy, unspecified". O21.9 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code O21.9 mean?
ICD-10-CM code O21.9 represents “Vomiting of pregnancy, unspecified”. It is classified under Chapter 15: Pregnancy, Childbirth and the Puerperium and is a billable/specific code that can be used on a claim.
Is O21.9 a billable code?
Yes, O21.9 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is O21.9 in?
O21.9 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O21.9?
O21.9 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).
Are additional codes required with O21.9?
Yes, when using O21.9, also report: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known..
What SNOMED CT codes does O21.9 map to?
O21.9 maps to 5 SNOMED CT concepts: 106005003, 51885006, 16932000, 1296685008, 90325002. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for O21.9?
O21.9 is linked to 1 UMLS Concept Unique Identifier: C0269661. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does O21.9 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like vomiting of pregnancy, unspecified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of O21.9?
O21.9 maps to the ICD-11 code: JA60.Z (Excessive vomiting in pregnancy, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.