O66
O66: Other obstructed labor
Non-billable headerICD-10-CM
O66 is a non-billable header ICD-10-CM code for other obstructed labor. It cannot be billed on its own: choose one of the more specific child codes below.
Other codes that can never be billed with O66
Their own Excludes1 notes name this code, so the conflict is not listed above.
- O33Maternal care for disproportion
- O33.7Maternal care for disproportion due to other fetal deformities
- O33.7XX0Maternal care for disproportion due to other fetal deformities, not applicable or unspecified
- O33.7XX1Maternal care for disproportion due to other fetal deformities, fetus 1
- O33.7XX2Maternal care for disproportion due to other fetal deformities, fetus 2
- O33.7XX3Maternal care for disproportion due to other fetal deformities, fetus 3
- O33.7XX4Maternal care for disproportion due to other fetal deformities, fetus 4
- O33.7XX5Maternal care for disproportion due to other fetal deformities, fetus 5
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
9 child codes. Green means billable.
- 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
- O66.4Failed trial of labor
- 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