2021

  1. ICD-10-CM Codes
    2. ›
  2. O00-O9A Pregnancy, childbirth and the puerperium
    3. ›
  3. O60-O77 Complications of labor and delivery
    4. ›
  4. O66- Other obstructed labor
    5. ›
  5. 2021 ICD-10-CM Diagnosis Code O66.9

2021 ICD-10-CM Diagnosis Code O66.9

Obstructed labor, unspecified

    2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
  • O66.9 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2021 edition of ICD-10-CM O66.9 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of O66.9 - other international versions of ICD-10 O66.9 may differ.
ICD-10-CM Coding Rules
  • O66.9 is applicable to maternity patients aged 12 - 55 years inclusive.
Applicable To
  • Dystocia NOS
  • Fetal dystocia NOS
  • Maternal dystocia NOS
The following code(s) above O66.9 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 O66.9:
  • O00-O9A
    2021 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
Approximate Synonyms
  • Obstructed labor
Clinical Information
  • Slow or difficult obstetric labor or childbirth.
ICD-10-CM O66.9 is grouped within Diagnostic Related Group(s) (MS-DRG v38.0):
  • 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 O66.9 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
Code annotations containing back-references to O66.9:
  • Type 1 Excludes: O62.4
    ICD-10-CM Diagnosis Code O62.4

    Hypertonic, incoordinate, and prolonged uterine contractions

      2016 2017 2018 2019 2020 2021 Billable/Specific Code Maternity Dx (12-55 years)
    Applicable To
    • Cervical spasm
    • Contraction ring dystocia
    • Dyscoordinate labor
    • Hour-glass contraction of uterus
    • Hypertonic uterine dysfunction
    • Incoordinate uterine action
    • Tetanic contractions
    • Uterine dystocia NOS
    • Uterine spasm
    Type 1 Excludes
    • dystocia (fetal) (maternal) NOS (O66.9)

Diagnosis Index entries containing back-references to O66.9:

ICD-10-CM Codes Adjacent To O66.9
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
O66.9 Obstructed labor, unspecified
O67 Labor and delivery complicated by intrapartum hemorrhage, not elsewhere classified
O67.0 Intrapartum hemorrhage with coagulation defect
O67.8 Other intrapartum hemorrhage
O67.9 Intrapartum hemorrhage, unspecified
O68 Labor and delivery complicated by abnormality of fetal acid-base balance
O69 Labor and delivery complicated by umbilical cord complications
O69.0 Labor and delivery complicated by prolapse of cord
O69.0XX0 …… not applicable or unspecified
O69.0XX1 …… fetus 1
O69.0XX2 …… fetus 2

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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