O00 – Ectopic pregnancy

ICD-10-CM 2027 diagnosis code · Pregnancy with abortive outcome

Non-billable header

ICD-10-CM code O00

Code: O00 (claims format: O00)
Description: Ectopic pregnancy
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 15. Pregnancy, childbirth and the puerperium (O00-O9A)
Block: O00-O08 Pregnancy with abortive outcome

Billable codes under O00

O00 is a header code and cannot be used on claims. Choose the most specific code:

O00.0 – Abdominal pregnancyHeader (more codes below)
O00.1 – Tubal pregnancyHeader (more codes below)
O00.2 – Ovarian pregnancyHeader (more codes below)
O00.3 – Cesarean scar ectopic pregnancyHeader (more codes below) · New in 2027
O00.4 – Cervical ectopic pregnancyHeader (more codes below) · New in 2027
O00.5 – Cornual ectopic pregnancyHeader (more codes below) · New in 2027
O00.8 – Other ectopic pregnancyHeader (more codes below)
O00.9 – Ectopic pregnancy, unspecifiedHeader (more codes below)

Notes for O00

Includes:

ruptured ectopic pregnancy

Use additional code:

code from category O08 to identify any associated complication

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block O00-O08

Excludes1 (not coded here):

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

Frequently asked questions

What is ICD-10 code O00?

O00 is the ICD-10-CM code for ectopic pregnancy, in the block O00-O08 (Pregnancy with abortive outcome).

Is O00 a billable code?

No. O00 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.