O66.4 is the ICD-10 code for Failed trial of labour, unspecified. It is a four-character subcategory of O66 (Other obstructed labour), the most specific level in the WHO edition. It belongs to the block O60–O75 (Complications of labour and delivery) in Chapter XV, Pregnancy, childbirth and the puerperium.
- Code type
- Subcategory (4 characters)
- Chapter
- XV · O00–O99
- Classification
- WHO ICD-10, 2019 version
What O66.4 includes
Conditions and terms that are coded here.
- Failed trial of labour with subsequent delivery by caesarean section
O66.4 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
O66.4Misslyckat försök till vaginal förlossning, ospecificerat
O66.4Uspesifisert mislykket forsøk på induksjon av fødsel
DO664Fødsel kompliceret af mislykket forsøg på vaginal fødsel
O66.4Määrittämätön epäonnistunut synnytysyritys
O66.4Misslungener Versuch der Geburtsbeendigung, nicht näher bezeichnet
O66.4Échec de l'épreuve de travail, sans précision
O66.4mislukte proefbaring, niet-gespecificeerd
Listed through more specific codes:
- O66.40Failed trial of labor, unspecified
- O66.41Failed attempted vaginal birth after previous cesarean delivery
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
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