O21.0
BillableMild hyperemesis gravidarum
Mild hyperemesis gravidarum
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Hyperemesis gravidarum, mild or unspecified, starting before the end of the 20th week of gestation
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
- supervision of normal pregnancy (Z34.-)
Excludes 2
Conditions not included here, but the patient may have both
- mental and behavioral disorders associated with the puerperium (F53.-)
- obstetrical tetanus (A34)
- postpartum necrosis of pituitary gland (E23.0)
- puerperal osteomalacia (M83.0)
- maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
- maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-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.
Also Known As / Clinical Terms
SNOMED CT
- Excessive pregnancy vomiting14094001
- Excessive vomiting in pregnancy14094001
- Hyperemesis arising during pregnancy14094001
- Hyperemesis gravidarum14094001
- Hyperemesis in pregnancy14094001
- Hyperemesis of pregnancy14094001
- Persistent AND/OR vicious vomiting arising during pregnancy14094001
- Mild hyperemesis before end of 22 weeks of gestation19569008
- Mild hyperemesis gravidarum19569008
- Mild hyperemesis in pregnancy19569008
- Moderate hyperemesis gravidarum129597002
- Hyperemesis444673007
Frequently Asked Questions
What is ICD-10 code O21.0?
ICD-10-CM code O21.0 represents "Mild hyperemesis gravidarum". It is a billable/specific code that can be used on a claim.
Is O21.0 a billable code?
Yes, O21.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is O21.0 in?
O21.0 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O21.0?
O21.0 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-).
Are additional codes required with O21.0?
Yes, when using O21.0 you should also code: code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known..
What SNOMED CT codes does O21.0 map to?
O21.0 maps to 4 SNOMED CT concepts: 14094001, 444673007, 19569008, 129597002. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for O21.0?
O21.0 is linked to 2 UMLS Concept Unique Identifiers: C2903593, C0020451. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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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.