O66.3
ICD-10BillableObstructed labor due to other abnormalities of fetus
Official ICD-10-CM descriptor (FY2026)
Obstructed labor due to other abnormalities of fetus
O66.3 is valid for submission on a claim — CMS flags it as a billable, specific code.
Inclusion terms
- Dystocia due to fetal ascites
- Dystocia due to fetal hydrops
- Dystocia due to fetal meningomyelocele
- Dystocia due to fetal sacral teratoma
- Dystocia due to fetal tumor
- Dystocia due to hydrocephalic fetus
Use additional code
Report an additional code to identify the associated condition.
- code to identify cause of obstruction
Related codes in O66
- O66.0Obstructed labor due to shoulder dystocia
- O66.1Obstructed labor due to locked twins
- O66.2Obstructed labor due to unusually large fetus
- O66.4Failed trial of laborcategory
- 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
Where this code sits
- Parent code
- O66
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.