MCMedicalCodingSoftware
O02.1

O02.1: Missed abortion

Billable / specific codeICD-10-CM

O02.1 is a billable, specific ICD-10-CM code for missed abortion. It is valid for submission on a claim.

Check O02.1 with the rest of the claim: free scrubber

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

  • 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)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Early fetal death, before completion of 20 weeks of gestation, with retention of dead fetus

Excludes1 inherited from the categories above O02.1

A category’s note binds every code beneath it.

Written on O02: Other abnormal products of conception

  • papyraceous fetus (O31.0-)

Other codes that can never be billed with O02.1

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • O36.4Maternal care for intrauterine death
  • O36.4XX0Maternal care for intrauterine death, not applicable or unspecified
  • O36.4XX1Maternal care for intrauterine death, fetus 1
  • O36.4XX2Maternal care for intrauterine death, fetus 2
  • O36.4XX3Maternal care for intrauterine death, fetus 3
  • O36.4XX4Maternal care for intrauterine death, fetus 4
  • O36.4XX5Maternal care for intrauterine death, fetus 5
  • O36.4XX9Maternal care for intrauterine death, other fetus

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

O02.1 is named in 1 Medicare coverage policy: 1 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A57189Billing and Coding: Serum Magnesium

Alphabetic index entries that lead here

  • Abortion›missed
  • Missed›abortion
  • Dead›fetus, retained›early pregnancy
  • Retention›products of conception›early pregnancy(dead fetus)
  • Delivery›complicated›by›intrauterine fetal death, early
  • Pregnancy›complicated by›death of fetus›early pregnancy
  • Pregnancy›complicated by›intrauterine fetal death›early pregnancy
  • Pregnancy›complicated by›missed›abortion
  • Retention›dead›fetus›early fetal death
  • Retention›fetus›dead›early
  • Delivery›complicated›by›fetal›death, early
  • Pregnancy›complicated by›fetal›death›early pregnancy

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under O02

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.