Map which Chapter 8 bases apply, then show the need is daily and can be met only in a SNF (the practical-matter test). This is what a coverage reviewer looks for on a Part A day.
Covered skilled procedure; observation & assessment
Craniotomy/scalp incision and wound care are skilled services under Chapter 8, and the early post-neurosurgical and post-head-injury course carries a reasonable potential for a time-critical complication that requires daily nursing judgment to detect.
