ICD-10 Code O00.21

Ovarian pregnancy with intrauterine pregnancy

Version 2019 Replaced Code Non-Billable Code

Not Valid for Submission

O00.21 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of ovarian pregnancy with intrauterine pregnancy. The code is NOT valid for the year 2019 for the submission of HIPAA-covered transactions.

ICD-10: O00.21
Short Description:Ovarian pregnancy with intrauterine pregnancy
Long Description:Ovarian pregnancy with intrauterine pregnancy

Consider the following ICD-10 codes with a higher level of specificity:

  • O00.211 - Right ovarian pregnancy with intrauterine pregnancy
  • O00.212 - Left ovarian pregnancy with intrauterine pregnancy
  • O00.219 - Unspecified ovarian pregnancy with intrauterine pregnancy

Replaced Code

This code was replaced in the 2019 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2018. This code was replaced for the FY 2019 (October 1, 2018 - September 30, 2019).

  • O00.211 - Right ovarian pregnancy with intrauterine pregnancy
  • O00.212 - Left ovarian pregnancy with intrauterine pregnancy
  • O00.219 - Unspecified ovarian pregnancy with intrauterine pregnancy

Code Classification

  • Pregnancy, childbirth and the puerperium (O00–O99)
    • Pregnancy with abortive outcome (O00-O08)
      • Ectopic pregnancy (O00)

Code History

  • FY 2018 - Code Deleted, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019

Information for Medical Professionals

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code O00.21 are found in the index:


Replacement Code

O0021 replaces the following previously assigned ICD-10 code(s):

  • O00.2 - Ovarian pregnancy

Information for Patients


Ectopic Pregnancy

Also called: Abdominal pregnancy, Tubal pregnancy

The uterus, or womb, is the place where a baby grows when a woman is pregnant. If you have an ectopic pregnancy, the fertilized egg grows in the wrong place, outside the uterus, usually in the fallopian tubes. The result is usually a miscarriage.

Ectopic pregnancy can be a medical emergency if it ruptures. Signs of ectopic pregnancy include

  • Abdominal pain
  • Shoulder pain
  • Vaginal bleeding
  • Feeling dizzy or faint

Get medical care right away if you have these signs. Doctors use drugs or surgery to remove the ectopic tissue so it doesn't damage your organs. Many women who have had ectopic pregnancies go on to have healthy pregnancies later.

Dept. of Health and Human Services Office on Women's Health

  • D and C (Medical Encyclopedia)
  • Ectopic pregnancy (Medical Encyclopedia)
  • HCG blood test - quantitative (Medical Encyclopedia)

[Learn More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.