DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O20 Hemorrhage in early pregnancy

  • Header · not billable

O20 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Threatenedabortion → O20.0
  • Threatenedmiscarriage → O20.0
  • Menstruationduring pregnancy → O20.8

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O20-O29 Other maternal disorders predominantly related to pregnancy (O20-O29)
  3. O20 Hemorrhage in early pregnancy
Billable codes
3
Subdivisions
3
CC / MCC codes
2 / 0
HCC V28 codes
0
New FY2027
0
Index entries
14

Codes in O20

  1. O20.0
    Threatened abortion
    BillableCC
    Inclusion terms 1

    Inclusion terms

    • Hemorrhage specified as due to threatened abortion
  2. O20.8
    Other hemorrhage in early pregnancy
    Billable
  3. O20.9
    Hemorrhage in early pregnancy, unspecified
    BillableCC

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At O20

Includes

  • hemorrhage before completion of 20 weeks gestation

Excludes1

  • pregnancy with abortive outcome (O00-O08) O00 O08

Notes that also apply

Block O20-O29 instructions (Excludes2 2): printed on the block page.

Chapter 15 instructions (Notes 6, Excludes1 1, Excludes2 4, Use additional code 1): printed on the chapter 15 page.

Index entries

  • Abortion (complete) (spontaneous)threatened (spontaneous) → O20.0
  • Threatenedabortion → O20.0
  • Threatenedmiscarriage → O20.0
  • Menstruationduring pregnancy → O20.8
  • Abortion (complete) (spontaneous)spontaneousthreatened → O20.0
  • Hemorrhage, hemorrhagic (concealed)antepartum (with)before 20 weeks gestation → O20.9
  • Hemorrhage, hemorrhagic (concealed)antepartum (with)before 20 weeks gestationthreatened abortion → O20.0
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhagethreatened abortion → O20.0
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)threatenedabortion → O20.0
  • Hemorrhage, hemorrhagic (concealed)antepartum (with)before 20 weeks gestationspecified type NEC → O20.8
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhagebefore 20 completed weeks gestation → O20.9
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhageearly → O20.9
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhagebefore 20 completed weeks gestationspecified NEC → O20.8
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hemorrhageearlyspecified NEC → O20.8

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy