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ICD-10 Code O02.1: Missed abortion

O02.1 is a billable ICD-10 diagnosis code used to classify Missed abortion in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Pregnancy, childbirth and the puerperium (O00-O9A).

When is it used?

  • May be used when a clinician documents missed abortion in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
15Pregnancy, childbirth and the puerperium (O00-O9A)
block
O00-O08Pregnancy with abortive outcome
category
O02Other abnormal products of conception
currentO02

Official coding notes

Inclusion terms
  • Early fetal death, before completion of 20 weeks of gestation, with retention of dead fetus
Excludes1 (do not code together)
  • failed induced abortion (O07.-)
  • fetal death (intrauterine) (late) (O36.4)
  • missed abortion with blighted ovum (O02.0)
  • missed abortion with hydatidiform mole (O01.-)
  • missed abortion with nonhydatidiform (O02.0)
  • missed abortion with other abnormal products of conception (O02.8-)
  • missed delivery (O36.4)
  • stillbirth (P95)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

ObstetricianGynecologist

Coverage-related procedures and services

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
O02.1

Common synonyms

Missed abortion

Frequently asked questions

Code details

CodeO02.1
SystemICD10
Display nameMissed abortion
ChapterPregnancy, childbirth and the puerperium (O00-O9A)
BlockPregnancy with abortive outcome

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Abortion(complete) (spontaneous)DeadDelivery(childbirth) (labor)Delivery(childbirth) (labor)MissedPregnancy(single) (uterine)Pregnancy(single) (uterine)Pregnancy(single) (uterine)Pregnancy(single) (uterine)RetentionRetentionRetention

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

ICD-10 Code O02.1 for Missed abortion | HealthAssure