Is ICD-10-CM code O00.132 billable?

Yes, O00.132 (Left interstitial ectopic pregnancy with intrauterine pregnancy) is a billable ICD-10-CM diagnosis code, valid for reimbursement on HIPAA-covered transactions for FY2027.

What chapter does ICD-10-CM code O00.132 belong to?

O00.132 belongs to Chapter 15 of the ICD-10-CM tabular list: O00–O9A (Pregnancy, Childbirth and the Puerperium).

Is O00.132 a new ICD-10-CM code for 2027?

Yes, O00.132 was added or revised in the FY2027 ICD-10-CM update, effective October 1, 2026, as published by the Centers for Medicare and Medicaid Services (CMS).

O00.132BillableCCNew for FY2027Maternity

Left interstitial ectopic pregnancy with intrauterine pregnancy

Pregnancy, Childbirth and the Puerperium·Interstitial ectopic pregnancy with intrauterine pregnancy·subcategory·FY 2027

Ectopic Pregnancy: The uterus, or womb, is the place where a fetus grows during pregnancy. In an ectopic pregnancy, the fertilized egg grows in the wrong place outside the uterus. It usually occurs in the fallopian tubes. These tubes carry eggs from the ovaries to the uterus. Sometimes, an ectopic pregnancy can occur in the ovaries, abdominal cavity, or the lower part of the uterus (cervix).

Read more about ectopic pregnancy on MedlinePlus · Source: MedlinePlus, National Library of Medicine

Instructional notes

Also applies, from O00.1: Tubal pregnancy

These notes sit on O00.1 and apply to every code under it, including O00.132.

Includes: conditions that are coded here

Fallopian pregnancy
Rupture of (fallopian) tube due to pregnancy
Tubal abortion

Also applies, from O00: Ectopic pregnancy

These notes sit on O00 and apply to every code under it, including O00.132.

Includes: conditions that are coded here

ruptured ectopic pregnancy

Use additional code: add a second code for this, listed after this one

code from category O08 to identify any associated complication

Also applies, from Pregnancy with abortive outcome (O00-O08)

These notes sit on O00-O08 and apply to every code under it, including O00.132.

Excludes1: not coded here, use a different code

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

Where O00.132 sits

O00-O08 Pregnancy with abortive outcome (O00-O08)
O00 Ectopic pregnancy
O00.1 Tubal pregnancy
O00.13 Interstitial ectopic pregnancy with intrauterine pregnancy
O00.132 Left interstitial ectopic pregnancy with intrauterine pregnancy

MS-DRGs

As the principal diagnosis, this code groups to these MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Code history

FY 2026: replaced O00.112 (Left tubal pregnancy with intrauterine pregnancy)