O20.0

Billable
ChapterO00–O9A
Ranksubcategory
Official Description

Threatened abortion

Metadata & Insights
  • •2026 ICD-10-CM Edition - Effective October 1, 2025.
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 15: Pregnancy, Childbirth and the Puerperium (O00-O9A).

Instructional Notes

Includes
  • Hemorrhage specified as due to threatened abortion
General instructions are available for the parent sections:
View CH15 NotesView O20-O29 NotesView O20 Notes

Clinical Hierarchy

CH15Pregnancy, childbirth and the puerperium (O00-O9A)
O20-O29Other maternal disorders predominantly related to pregnancy (O20-O29)
O20Hemorrhage in early pregnancy
O20.0Threatened abortion

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to O20.0:

categoryO20
Hemorrhage in early pregnancy
View context instructions
blockO20-O29
Other maternal disorders predominantly related to pregnancy (O20-O29)
View context instructions
chapterCH15
Pregnancy, childbirth and the puerperium (O00-O9A)
View context instructions

Alphabetic Index Mentions

These are Diagnosis Index lookup paths that route to O20.0. Use them as entry terms for search, then confirm final coding instructions in the Tabular List and notes above.

7 raw paths
Abortion (complete) (spontaneous)2 unique routes
spontaneous
threatened→O20.0
threatened (spontaneous)→O20.0
Hemorrhage, hemorrhagic (concealed)1 unique routes
antepartum (with)
before 20 weeks gestation
threatened abortion→O20.0
Pregnancy (single) (uterine)2 unique routes
complicated by (care of) (management affected by)(2 variants)
hemorrhage
threatened abortion→O20.0
threatened
abortion→O20.0
Threatened2 unique routes
abortion→O20.0
miscarriage→O20.0

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 817
Other Antepartum Diagnoses with O.R. Procedures with MCC
DRG 818
Other Antepartum Diagnoses with O.R. Procedures with CC
DRG 819
Other Antepartum Diagnoses with O.R. Procedures without CC/MCC
DRG 831
Other Antepartum Diagnoses without O.R. Procedures with MCC
DRG 832
Other Antepartum Diagnoses without O.R. Procedures with CC
DRG 833
Other Antepartum Diagnoses without O.R. Procedures without CC/MCC

Cross Reference

Find Procedures (ICD-10-PCS)

Find surgical and procedural codes related to Threatened abortion.

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