Other obstructed labor

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Coding of obstetric cases with O00-O9A codes: sequencing priority, trimester and fetus characters, principal diagnosis selection, delivery outcome, and pregnancy-related complications.

• General Rules for Obstetric Cases (page 63)
• Selection of OB Principal or First-listed Diagnosis (page 64)
• Pre-existing conditions versus conditions due to the pregnancy (page 65)
• Pre-existing hypertension in pregnancy (page 66)
• Fetal Conditions Affecting the Management of the Mother (page 66)
• HIV Infection in Pregnancy, Childbirth and the Puerperium (page 66)
• Diabetes mellitus in pregnancy (page 66)
• Long term use of insulin and oral hypoglycemics (page 67)

Read Section I.C.15 (page 63), 11 more topics

All codes under O66

O66 can't be used on a claim. Pick a billable code below; grey headings group them.

• 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
• O66.40Failed trial of labor, unspecified
• O66.41Failed attempted vaginal birth after previous cesarean delivery
• 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

O66 MS-DRGs

As the principal diagnosis, the billable codes under O66 group to MS-DRG 817, 818, 819, 831, 832, or 833 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

• DRG 817 Other Antepartum Diagnoses with O.R. Procedures with MCC (9 of 10 codes)
• DRG 818 Other Antepartum Diagnoses with O.R. Procedures with CC (9 of 10 codes)
• DRG 819 Other Antepartum Diagnoses with O.R. Procedures without CC/MCC (9 of 10 codes)
• DRG 831 Other Antepartum Diagnoses without O.R. Procedures with MCC (9 of 10 codes)
• DRG 832 Other Antepartum Diagnoses without O.R. Procedures with CC (9 of 10 codes)
• DRG 833 Other Antepartum Diagnoses without O.R. Procedures without CC/MCC (9 of 10 codes)

Other codes that refer to O66

Notes on these codes point to O66.

• O33 Excludes1: disproportion with obstructed labor (O65-O66)
• P03.1 Includes: Newborn affected by conditions classifiable to O64-O66

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.