O66.4
O66.4: Failed trial of labor
Non-billable headerICD-10-CM
O66.4 is a non-billable header ICD-10-CM code for failed trial of labor. It cannot be billed on its own: choose one of the more specific child codes below.
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead O66.4
2 child codes. Green means billable.
Other codes under O66
- O66.0Obstructed labor due to shoulder dystocia
- O66.1Obstructed labor due to locked twins
- O66.2Obstructed labor due to unusually large fetus
- O66.3Obstructed labor due to other abnormalities of fetus
- O66.5Attempted application of vacuum extractor and forceps
- O66.6Obstructed labor due to other multiple fetuses
- O66.8Other specified obstructed labor
- O66.9Obstructed labor, unspecified