2023

  1. ICD-10-CM Codes
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  2. O00-O9A
    3. ›
  3. O30-O48
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  4. O33-
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  5. 2023 ICD-10-CM Diagnosis Code O33.1

2023 ICD-10-CM Diagnosis Code O33.1

Maternal care for disproportion due to generally contracted pelvis

    2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
  • O33.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Matern care for disproprtn d/t generally contracted pelvis
  • The 2023 edition of ICD-10-CM O33.1 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of O33.1 - other international versions of ICD-10 O33.1 may differ.
ICD-10-CM Coding Rules
  • O33.1 is applicable to maternity patients aged 12 - 55 years inclusive.
  • O33.1 is applicable to female patients.
Applicable To
  • Maternal care for disproportion due to contracted pelvis NOS causing disproportion
The following code(s) above O33.1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to O33.1:
  • O00-O9A
    2023 ICD-10-CM Range O00-O9A

    Pregnancy, childbirth and the puerperium

    Note
    • CODES FROM THIS CHAPTER ARE FOR USE ONLY ON MATERNAL RECORDS, NEVER ON NEWBORN RECORDS
    • 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)
    • Trimesters are counted from the first day of the last menstrual period. They are defined as follows:
    • 1st trimester- less than 14 weeks 0 days
    • 2nd trimester- 14 weeks 0 days to less than 28 weeks 0 days
    • 3rd trimester- 28 weeks 0 days until delivery
    Type 1 Excludes
    • supervision of normal pregnancy (Z34.-)
    Type 2 Excludes
    • 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 from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
    Pregnancy, childbirth and the puerperium
  • O33
    ICD-10-CM Diagnosis Code O33

    Maternal care for disproportion

      2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
    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
    Type 1 Excludes
    • disproportion with obstructed labor (O65-O66)
    Maternal care for disproportion
Approximate Synonyms
  • Contracted pelvis affecting management of pregnancy
  • Pelvic disproportion due to contracted pelvis
ICD-10-CM O33.1 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):
  • 817 Other antepartum diagnoses with o.r. Procedures with mcc
  • 818 Other antepartum diagnoses with o.r. Procedures with cc
  • 819 Other antepartum diagnoses with o.r. Procedures without cc/mcc
  • 831 Other antepartum diagnoses without o.r. Procedures with mcc
  • 832 Other antepartum diagnoses without o.r. Procedures with cc
  • 833 Other antepartum diagnoses without o.r. Procedures without cc/mcc

Convert O33.1 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
  • 2022 (effective 10/1/2021): No change
  • 2023 (effective 10/1/2022): No change

Diagnosis Index entries containing back-references to O33.1:
  • Contraction(s)
    • pelvis (acquired) (general) M95.5
      ICD-10-CM Diagnosis Code M95.5

      Acquired deformity of pelvis

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Type 1 Excludes
      • maternal care for known or suspected disproportion (O33.-)
  • Infancy, infantile, infantilism - see also condition
    • pelvis M95.5
      ICD-10-CM Diagnosis Code M95.5

      Acquired deformity of pelvis

        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code
      Type 1 Excludes
      • maternal care for known or suspected disproportion (O33.-)
  • Pregnancy (single) (uterine) Z33.1
    - see also Delivery and Puerperal
    ICD-10-CM Diagnosis Code Z33.1

    Pregnant state, incidental

      2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
    Applicable To
    • Pregnancy NOS
    • Pregnant state NOS
    Type 1 Excludes
    • complications of pregnancy (O00-O9A)
    • pregnant state, gestational carrier (Z33.3)
    • complicated by (care of) (management affected by)
      • contracted pelvis (general) O33.1
      • disproportion (due to) O33.9
        ICD-10-CM Diagnosis Code O33.9

        Maternal care for disproportion, unspecified

          2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code Maternity Dx (12-55 years) Female Dx
        Applicable To
        • Maternal care for disproportion due to cephalopelvic disproportion NOS
        • Maternal care for disproportion due to fetopelvic disproportion NOS
        • generally contracted pelvis O33.1
  • Small (ness)

ICD-10-CM Codes Adjacent To O33.1
O32.9 Maternal care for malpresentation of fetus, unspecified
O32.9XX0 …… not applicable or unspecified
O32.9XX1 …… fetus 1
O32.9XX2 …… fetus 2
O32.9XX3 …… fetus 3
O32.9XX4 …… fetus 4
O32.9XX5 …… fetus 5
O32.9XX9 …… other fetus
O33 Maternal care for disproportion
O33.0 Maternal care for disproportion due to deformity of maternal pelvic bones
O33.1 Maternal care for disproportion due to generally contracted pelvis
O33.2 Maternal care for disproportion due to inlet contraction of pelvis
O33.3 Maternal care for disproportion due to outlet contraction of pelvis
O33.3XX0 …… not applicable or unspecified
O33.3XX1 …… fetus 1
O33.3XX2 …… fetus 2
O33.3XX3 …… fetus 3
O33.3XX4 …… fetus 4
O33.3XX5 …… fetus 5
O33.3XX9 …… other fetus
O33.4 Maternal care for disproportion of mixed maternal and fetal origin

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

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