O20.0
BillableThreatened abortion
Threatened abortion
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Hemorrhage specified as due to threatened abortion
Includes
Conditions included under this code
- hemorrhage before completion of 20 weeks gestation
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(2)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(45)
SNOMED CT
- Threatened abortion in third trimester10884004
- Threatened miscarriage in third trimester10884004
- Threatened abortion54048003
- Threatened abortion (antepartum)54048003
- Threatened miscarriage54048003
- Threatened abortion in first trimester73790007
- Threatened miscarriage in first trimester73790007
- Threatened abortion in second trimester75933004
- Threatened miscarriage in second trimester75933004
UMLS
- Abortion threatenedC0000821
- Abortion, ThreatenedC0000821
- Miscarriage, ThreatenedC0000821
- Threatened AbortionC0000821
- Threatened AbortionsC0000821
- Threatened MiscarriageC0000821
- Threatened MiscarriagesC0000821
- Threatened abortionC0000821
- Threatened abortion (antepartum)C0000821
- Threatened abortion (disorder)C0000821
- Threatened abortion, antepartumC0000821
- Threatened miscarriageC0000821
- abortion threatenedC0000821
- miscarriage threateningC0000821
- threaten abortionC0000821
- threatened abortionC0000821
- threatened miscarriageC0000821
- Hemorrhage specified as due to threatened abortionC2903592
Clinical Terms
- Hemorrhage specified as due to threatened abortion
- Threatened abortion (disorder)
- abortion threatened
- Threatened abortion in second trimester
- Threatened miscarriage
- Abortion, Threatened
- Threatened Miscarriages
- Threatened miscarriage in third trimester
- Threatened miscarriage in second trimester
- Threatened Abortions
- Threatened abortion in first trimester
- Threatened abortion, antepartum
- Threatened abortion in third trimester
- Miscarriage, Threatened
- Threatened miscarriage in first trimester
- Threatened abortion (antepartum)
- miscarriage threatening
- threaten abortion
Frequently Asked Questions
What is the ICD-10 code for threatened abortion?
The ICD-10-CM code for threatened abortion is O20.0. The full clinical description is "Threatened abortion". O20.0 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code O20.0 mean?
ICD-10-CM code O20.0 represents “Threatened abortion”. 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 O20.0 a billable code?
Yes, O20.0 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is O20.0 in?
O20.0 is in Chapter 15: Pregnancy, Childbirth and the Puerperium (codes O00-O9A).
What codes cannot be used with O20.0?
O20.0 has Excludes1 notes indicating codes that cannot be used together with it, including: supervision of normal pregnancy (Z34.-); pregnancy with abortive outcome (O00-O08).
Are additional codes required with O20.0?
Yes, when using O20.0, 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 O20.0 map to?
O20.0 maps to 4 SNOMED CT concepts: 54048003, 73790007, 75933004, 10884004. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for O20.0?
O20.0 is linked to 2 UMLS Concept Unique Identifiers: C0000821, C2903592. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does O20.0 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like threatened abortion 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 O20.0?
O20.0 maps to the ICD-11 code: JA40.0 (Threatened abortion).
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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.