O02.1

Missed abortion

Billable FY2026 2025-10-01 → 2026-09-30

Exclusions 15 never code together

O02.1code

Excludes1

failed induced abortion (O07.-)O07.-O07.-
fetal death (intrauterine) (late) (O36.4)O36.4 O36.4
missed abortion with blighted ovum (O02.0)O02.0 O02.0
missed abortion with hydatidiform mole (O01.-)O01.-O01.-
missed abortion with nonhydatidiform (O02.0)O02.0 O02.0
missed abortion with other abnormal products of conception (O02.8-)O02.8-O02.8-
missed delivery (O36.4)O36.4 O36.4
stillbirth (P95)P95 P95

O02code

Excludes1

papyraceous fetus (O31.0-)O31.0-

O00-O08block

Excludes1

continuing pregnancy in multiple gestation after abortion of one fetus or more (O31.1-, O31.3-)O31.1-O31.3-

O00-O9Achapter

Excludes1

supervision of normal pregnancy (Z34.-)Z34.-

Excludes2

mental and behavioral disorders associated with the puerperium (F53.-)F53.-
obstetrical tetanus (A34)A34
postpartum necrosis of pituitary gland (E23.0)E23.0
puerperal osteomalacia (M83.0)M83.0

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Excludes2 — not included here, but the patient may have both. Code both when documented.

Instructional notes 9

O02code

Use additional code

code from category O08 to identify any associated complication.O08

O02.1code

Inclusion terms

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

O00-O9Achapter

Notes

CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
1st trimester- less than 14 weeks 0 days
2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
3rd trimester- 28 weeks 0 days until delivery

Use additional code

code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.Z3A

Index entries leading here 6

Pregnancy (single) (uterine) Z33.1
- complicated by (care of) (management affected by)
  - missed
    - abortion O02.1
  - fetal (maternal care for)
    - death (near term) O36.4
      - early pregnancy O02.1
  - death of fetus (near term) O36.4
    - early pregnancy O02.1
  - intrauterine fetal death (near term) O36.4
    - early pregnancy O02.1
Missed
- abortion O02.1
Abortion (complete) (spontaneous) O03.9
- missed O02.1
Delivery (childbirth) (labor)
- complicated O75.9
  - by
    - fetal
      - death, early O02.1
    - intrauterine fetal death, early O02.1
Retention — see also Retained
- dead
  - fetus (at or near term) (mother) O36.4
    - early fetal death O02.1
- fetus
  - dead O36.4
    - early O02.1
- products of conception
  - early pregnancy (dead fetus) O02.1
Dead
- fetus, retained (mother) O36.4
  - early pregnancy O02.1

Alongside this code 3 same parent — O02

O02.0 Blighted ovum and nonhydatidiform mole O02.8 Other specified abnormal products of conception category O02.9 Abnormal product of conception, unspecified

Medications 1

5 Abortion, Missed drugs

MED-RT files conditions by MeSH, which carves the world differently from ICD-10. These are name matches on this code's description, offered as candidates — not as an assertion that they are this code.

Additional references

AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable: yes
Code set: FY2026
Parent: O02
Block: O00-O08
Siblings: 3

Present FY2024–FY2027.