O33

Maternal care for disproportion

Non-billable header

O33 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes

  • the listed conditions as a reason for observation, hospitalization or other obstetric care of the mother, or for cesarean delivery before onset of labor
  • Note: CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
  • Note: Codes from this chapter are for use for conditions related to or aggravated by the pregnancy, childbirth, or by the puerperium (maternal causes or obstetric causes)
  • Note: Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
  • Note: 1st trimester- less than 14 weeks 0 days
  • Note: 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
  • Note: 3rd trimester- 28 weeks 0 days until delivery

Excludes1

Not coded here — never report together with this code.

  • supervision of normal pregnancy (Z34.-)
  • disproportion with obstructed labor (O65-O66)

Excludes2

Not included here — may be reported together when both conditions exist.

  • mental and behavioral disorders associated with the puerperium (F53.-)
  • obstetrical tetanus (A34)
  • postpartum necrosis of pituitary gland (E23.0)
  • puerperal osteomalacia (M83.0)

Use additional code

Add a code to identify the following, if applicable.

  • code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.

More specific codes O33

  • O33.0Maternal care for disproportion due to deformity of maternal pelvic bonesBillable
  • O33.1Maternal care for disproportion due to generally contracted pelvisBillable
  • O33.2Maternal care for disproportion due to inlet contraction of pelvisBillable
  • O33.3Maternal care for disproportion due to outlet contraction of pelvisNeeds 7th char
  • O33.4Maternal care for disproportion of mixed maternal and fetal originNeeds 7th char
  • O33.5Maternal care for disproportion due to unusually large fetusNeeds 7th char
  • O33.6Maternal care for disproportion due to hydrocephalic fetusNeeds 7th char
  • O33.7Maternal care for disproportion due to other fetal deformitiesNeeds 7th char
  • O33.8Maternal care for disproportion of other originBillable
  • O33.9Maternal care for disproportion, unspecifiedBillable

Related codes

  • O30Multiple gestationHeader
  • O31Complications specific to multiple gestationNeeds 7th char
  • O32Maternal care for malpresentation of fetusNeeds 7th char
  • O34Maternal care for abnormality of pelvic organsHeader
  • O35Maternal care for known or suspected fetal abnormality and damageNeeds 7th char
  • O36Maternal care for other fetal problemsNeeds 7th char
  • O40PolyhydramniosNeeds 7th char
  • O41Other disorders of amniotic fluid and membranesNeeds 7th char
  • O42Premature rupture of membranesHeader
  • O43Placental disordersHeader
  • O44Placenta previaHeader
  • O45Premature separation of placenta [abruptio placentae]Header
  • O46Antepartum hemorrhage, not elsewhere classifiedHeader
  • O47False laborHeader
  • O48Late pregnancyHeader

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