O00 — Ectopic pregnancy

Not billable

Is O00 billable?

No — O00 is a non-billable header code. O00 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 34 billable codes beneath O00.

Billable codes under this header

O00 at a glance

Code	O00
Description	Ectopic pregnancy
Billable	No — header code
Code set	ICD-10-CM FY2027
Valid for encounters	October 1, 2026 – September 30, 2027

Use additional code

Report an additional code alongside O00 to fully describe the condition. O00 is sequenced first.

code from category O08 to identify any associated complication

Includes

Conditions classified to O00.

ruptured ectopic pregnancy

Excludes1 — never code together — inherited from Chapter 15

The conditions below can never be reported together with O00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

supervision of normal pregnancy (Z34.-)

Excludes1 — never code together — inherited from O00-O08

The conditions below can never be reported together with O00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.

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

Use additional code — inherited from Chapter 15

Report an additional code alongside O00 to fully describe the condition. O00 is sequenced first.

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

Excludes2 — not included here — inherited from Chapter 15

The conditions below are not part of O00, but a patient may have both at the same time. When documentation supports it, O00 and the excluded code may both be reported.

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

What codes fall under O00? (8)

How long has O00 existed?

O00 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.

Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.

Which codes are confused with O00?

ICD-10-CM declares these codes mutually exclusive with O00 — exactly one of each pair can be correct for a given encounter.

vs N83.6Hematosalpinx