What is the primary diagnosis indicated by O80 in ICD-10-CM?

The primary diagnosis indicated by O80 in ICD-10-CM corresponds to a vaginal delivery. Specifically, O80 is used to code for a single live birth during a vaginal delivery, which is an uncomplicated delivery scenario. This code is part of the O80-O84 range in ICD-10-CM, which encompasses various aspects of maternal and newborn health related specifically to deliveries.

In the context of this coding system, a vaginal delivery is considered less complex compared to procedures like a cesarean delivery, which is covered under a different code (O82 for cesarean delivery). The other choices, such as high risk pregnancy or extraction operations, pertain to different circumstances which are not represented by the O80 code. Thus, the specificity of O80 in indicating a straightforward vaginal delivery is what makes this answer correct.