Is ICD-10-CM code O00 billable?

No, O00 (Ectopic pregnancy) is a non-billable ICD-10-CM code. It must be coded to a more specific subcategory before it can be used for reimbursement.

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

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

O00Not billable, use a more specific code below

Ectopic pregnancy

In Pregnancy with abortive outcome (O00-O08), chapter 15: Pregnancy, Childbirth and the Puerperium

34 billable codes under O00: all are a CC; none map to an HCC.A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment.

Instructional notes

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.

Excludes1: not coded here, use a different code

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

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Coding of obstetric cases with O00-O9A codes: sequencing priority, trimester and fetus characters, principal diagnosis selection, delivery outcome, and pregnancy-related complications.

General Rules for Obstetric Cases (page 63)
Selection of OB Principal or First-listed Diagnosis (page 64)
Pre-existing conditions versus conditions due to the pregnancy (page 65)
Pre-existing hypertension in pregnancy (page 66)
Fetal Conditions Affecting the Management of the Mother (page 66)
HIV Infection in Pregnancy, Childbirth and the Puerperium (page 66)
Diabetes mellitus in pregnancy (page 66)
Long term use of insulin and oral hypoglycemics (page 67)

Read Section I.C.15 (page 63), 11 more topics

All codes under O00

O00 can't be used on a claim. Pick a billable code below; grey headings group them.

O00 MS-DRGs

As the principal diagnosis, all 34 billable codes under O00 group to MS-DRG 817, 818, 819, 831, 832, or 833 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to O00

Notes on these codes point to O00.

CH10 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH11 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH12 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH13 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH14 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH3 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH6 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH7 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH8 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
CH9 Excludes2: complications of pregnancy, childbirth and the puerperium (O00-O9A)
D65 Excludes2: abortion or ectopic or molar pregnancy (O00-O07, O08.1)
D68 Excludes2: coagulation defects complicating abortion or ectopic or molar pregnancy (O00-O07, O08.1)
G08 Excludes1: abortion, ectopic or molar pregnancy (O00-O07, O08.7)
I26 Excludes2: pulmonary embolism complicating abortion, ectopic or molar pregnancy (O00-O07, O08.2)
I47 Code First: abortion or ectopic or molar pregnancy (O00-O07, O08.8)
I49 Code First: abortion or ectopic or molar pregnancy (O00-O07, O08.8)
I50 Code First: heart failure complicating abortion or ectopic or molar pregnancy (O00-O07, O08.8)
I74 Code First: embolism and thrombosis complicating abortion or ectopic or molar pregnancy (O00-O07, O08.2)
I80 Code First: if applicable: phlebitis and thrombophlebitis complicating abortion, ectopic or molar pregnancy (O00-O07, O08.7)
I82 Code First: abortion, ectopic or molar pregnancy (O00-O07, O08.7)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

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).

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.