2023 ICD-10-CM Diagnosis Code O66

Other obstructed labor

    2016 2017 2018 2019 2020 2021 2022 2023 Non-Billable/Non-Specific Code
  • O66 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2023 edition of ICD-10-CM O66 became effective on October 1, 2022.
  • This is the American ICD-10-CM version of O66 - other international versions of ICD-10 O66 may differ.
The following code(s) above O66 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 O66:
  • 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
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
ICD-10-CM Codes Adjacent To O66
O64.9XX9 …… other fetus
O65 Obstructed labor due to maternal pelvic abnormality
O65.0 Obstructed labor due to deformed pelvis
O65.1 Obstructed labor due to generally contracted pelvis
O65.2 Obstructed labor due to pelvic inlet contraction
O65.3 Obstructed labor due to pelvic outlet and mid-cavity contraction
O65.4 Obstructed labor due to fetopelvic disproportion, unspecified
O65.5 Obstructed labor due to abnormality of maternal pelvic organs
O65.8 Obstructed labor due to other maternal pelvic abnormalities
O65.9 Obstructed labor due to maternal pelvic abnormality, unspecified
O66 Other obstructed labor
O66.0 Obstructed labor due to shoulder dystocia
O66.1 Obstructed labor due to locked twins
O66.2 Obstructed labor due to unusually large fetus
O66.3 Obstructed labor due to other abnormalities of fetus
O66.4 Failed trial of labor
O66.40 …… unspecified
O66.41 Failed attempted vaginal birth after previous cesarean delivery
O66.5 Attempted application of vacuum extractor and forceps
O66.6 Obstructed labor due to other multiple fetuses
O66.8 Other specified obstructed labor

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