ABNS primary certification process available to all residents in ACGME accredited neurosurgery programs.

It is a 375 question examination with questions distributed as follows (link)

Topic	Questions
Neuroanatomy	49
Neurosciences	30
Neuropathology	43
Neuroimaging	57
Clinical Neurology	40
Neurosurgery	84
Critical Care/Fundamental Clinical Skills	65
Core Competencies	7
Total	375

ABNS pass percentages in prior years are as follows:.