O00.521BillableNew this fiscal year
Right cornual ectopic pregnancy with intrauterine pregnancy
- Chapter
- 15. Pregnancy, childbirth and the puerperium
- Category
- O00
- Effective date
- October 1, 2026
Related codes in category O00
O00Ectopic pregnancyO00.0Abdominal pregnancyO00.00Abdominal pregnancy without intrauterine pregnancyYesO00.01Abdominal pregnancy with intrauterine pregnancyYesO00.1Tubal pregnancyO00.10Tubal pregnancy without intrauterine pregnancyO00.101Right tubal pregnancy without intrauterine pregnancyYesO00.102Left tubal pregnancy without intrauterine pregnancyYesO00.109Unspecified tubal pregnancy without intrauterine pregnancyYesO00.11Tubal pregnancy with intrauterine pregnancyO00.111Right tubal pregnancy with intrauterine pregnancyYesO00.112Left tubal pregnancy with intrauterine pregnancyYes
Frequently asked questions
What is ICD-10 code O00.521?
O00.521 is an ICD-10-CM diagnosis code for Right cornual ectopic pregnancy with intrauterine pregnancy.
Is O00.521 a billable code?
Yes. O00.521 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is O00.521 in?
O00.521 falls under Chapter 15: Pregnancy, childbirth and the puerperium.
When did O00.521 become effective?
O00.521 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to O00.521?
O00.521 belongs to category O00, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.