Is ICD-10-CM code O20 billable?

No, O20 (Hemorrhage in early 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 O20 belong to?

O20 belongs to Chapter 15 of the ICD-10-CM tabular list: O00–O9A (Pregnancy, Childbirth and the Puerperium).

O20Not billable, use a more specific code below

Hemorrhage in early pregnancy

In Other maternal disorders predominantly related to pregnancy (O20-O29), chapter 15: Pregnancy, Childbirth and the Puerperium

3 billable codes under O20: 2 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

hemorrhage before completion of 20 weeks gestation

Excludes1: not coded here, use a different code

pregnancy with abortive outcome (O00-O08)

Also applies, from Other maternal disorders predominantly related to pregnancy (O20-O29)

These notes sit on O20-O29 and apply to every code under it, including O20.

Excludes2: not included here, code separately if applicable

maternal care related to the fetus and amniotic cavity and possible delivery problems (O30-O48)
maternal diseases classifiable elsewhere but complicating pregnancy, labor and delivery, and the puerperium (O98-O99)

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 O20

O20 can't be used on a claim. Pick a billable code below; grey headings group them.

O20 MS-DRGs

As the principal diagnosis, all 3 billable codes under O20 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 O20

Notes on these codes point to O20.

O46 Excludes1: hemorrhage in early pregnancy (O20.-)

About the condition

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

Health Problems in Pregnancy

A health problem in pregnancy is any disease or condition that could affect your health or the health of your fetus. Some health problems may make it more likely that you will have a high-risk pregnancy. A high-risk pregnancy is one in which you, your fetus, or both are at higher risk for health problems than in a typical pregnancy.

Vaginal Bleeding

Menstruation, or a period, is a woman's monthly bleeding. Abnormal vaginal bleeding is different from normal menstrual periods. It could be bleeding that is between periods, is very heavy, or lasts much longer than usual. It also includes bleeding that happens before puberty or after menopause. Causes can include:

Code history

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