DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O64 Obstructed labor due to malposition and malpresentation of fetus

  • Header · not billable
  • Codes take a 7th character

O64 is not billable. The category heads 56 billable codes in FY2027, grouped under 8 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

Index → code

  • Dystociapositional → O64.9
  • Arrest, arresteddeep transverse → O64.0
  • Arrest, arrestedtransverse (deep) → O64.0

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O60-O77 Complications of labor and delivery (O60-O77)
  3. O64 Obstructed labor due to malposition and malpresentation of fetus
Billable codes
56
Subdivisions
8
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
31

Codes in O64

  1. O64.0
    Obstructed labor due to incomplete rotation of fetal head +7th: 0 1 2 3 4 5 9
    Needs 7th character
    Inclusion terms 5

    Inclusion terms

    • Deep transverse arrest
    • Obstructed labor due to persistent occipitoiliac (position)
    • Obstructed labor due to persistent occipitoposterior (position)
    • Obstructed labor due to persistent occipitosacral (position)
    • Obstructed labor due to persistent occipitotransverse (position)
  2. O64.1
    Obstructed labor due to breech presentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
    Inclusion terms 3

    Inclusion terms

    • Obstructed labor due to buttocks presentation
    • Obstructed labor due to complete breech presentation
    • Obstructed labor due to frank breech presentation
  3. O64.2
    Obstructed labor due to face presentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
    Inclusion terms 1

    Inclusion terms

    • Obstructed labor due to chin presentation
  4. O64.3
    Obstructed labor due to brow presentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
  5. O64.4
    Obstructed labor due to shoulder presentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
    Inclusion terms 1, Excludes1 2

    Inclusion terms

    • Prolapsed arm

    Excludes1

    • impacted shoulders (O66.0) O66.0
    • shoulder dystocia (O66.0) O66.0
  6. O64.5
    Obstructed labor due to compound presentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
  7. O64.8
    Obstructed labor due to other malposition and malpresentation +7th: 0 1 2 3 4 5 9
    Needs 7th character
    Inclusion terms 2

    Inclusion terms

    • Obstructed labor due to footling presentation
    • Obstructed labor due to incomplete breech presentation
  8. O64.9
    Obstructed labor due to malposition and malpresentation, unspecified +7th: 0 1 2 3 4 5 9
    Needs 7th character

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

Notes that also apply

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

7th characters

7th characters for O64 defined here

One of the following 7th characters is to be assigned to each code under category O64. 7th character 0 is for single gestations and multiple gestations where the fetus is unspecified. 7th characters 1 through 9 are for cases of multiple gestations to identify the fetus for which the code applies. The appropriate code from category O30, Multiple gestation, must also be assigned when assigning a code from category O64 that has a 7th character of 1 through 9.

7th characters for O64
7thMeaning (NCHS)
0not applicable or unspecified
1fetus 1
2fetus 2
3fetus 3
4fetus 4
5fetus 5
9other fetus

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Arrest, arresteddeep transverse → O64.0
  • Arrest, arrestedtransverse (deep) → O64.0
  • Transversearrest (deep), in labor → O64.0
  • Breech presentation (mother)causing obstructed labor → O64.1
  • Dystociapositional → O64.9
  • Prolapse, prolapsedarm or handcausing obstructed labor → O64.4
  • Breech presentation (mother)footlingcausing obstructed labor → O64.8
  • Breech presentation (mother)incompletecausing obstructed labor → O64.8
  • Nonengagementhead NECin labor, causing obstructed labor → O64.8
  • Transverselie (mother)causing obstructed labor → O64.8
  • Delivery (childbirth) (labor)complicatedbyshoulder presentation → O64.4
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue todeep transverse arrest → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue toincomplete rotation of fetal head → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tobreech (complete) (frank) presentation → O64.1
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tobuttock presentation → O64.1
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tochin presentation → O64.2
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue toface presentation → O64.2
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tobrow presentation → O64.3
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue toprolapsed arm → O64.4
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue toshoulder presentation → O64.4
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tocompound presentation → O64.5
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tofootling presentation → O64.8
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tomalposition → O64.9
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tomalpresentation → O64.9
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue topersistent (position)occipitoiliac → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue topersistent (position)occipitoposterior → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue topersistent (position)occipitosacral → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue topersistent (position)occipitotransverse → O64.0
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tobreech (complete) (frank) presentationincomplete → O64.8
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tomalpositionspecified NEC → O64.8
  • Delivery (childbirth) (labor)complicatedbyobstructed labordue tomalpresentationspecified NEC → O64.8

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

Hierarchy