NPI Atlas

O20 – Hemorrhage in early pregnancy

ICD-10-CM 2027 diagnosis code · Other maternal disorders predominantly related to pregnancy

Non-billable header

ICD-10-CM code O20

Code: O20 (claims format: O20)
Description: Hemorrhage in early 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: O20-O29 Other maternal disorders predominantly related to pregnancy

Billable codes under O20

O20 is a header code and cannot be used on claims. Choose the most specific code:

O20.0 – Threatened abortionBillable
O20.8 – Other hemorrhage in early pregnancyBillable
O20.9 – Hemorrhage in early pregnancy, unspecifiedBillable

Notes for O20

Includes:

hemorrhage before completion of 20 weeks gestation

Excludes1 (not coded here):

pregnancy with abortive outcome (O00-O08)

Notes inherited from parent codes

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

Block O20-O29

Excludes2 (not included here):

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)

Frequently asked questions

What is ICD-10 code O20?

O20 is the ICD-10-CM code for hemorrhage in early pregnancy, in the block O20-O29 (Other maternal disorders predominantly related to pregnancy).

Is O20 a billable code?

No. O20 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.