2021 ICD-10-CM Code O66

Other obstructed labor

Version 2021
Non-Billable Code

Not Valid for Submission

O66 is a "header" nonspecific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of other obstructed labor. The code is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

ICD-10:O66
Short Description:Other obstructed labor
Long Description:Other obstructed labor

Code Classification

Specific Coding for Other obstructed labor

Header codes like O66 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for 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 - Failed trial of labor, 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

Information for Patients


Childbirth Problems

While childbirth usually goes well, complications can happen. They can cause a risk to the mother, baby, or both. Possible complications include

For some of these problems, the baby may need to be delivered surgically by a Cesarean section.


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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)