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.
Observation & assessment of an unstable condition
Recognizing, assessing, and responding to a change in condition is inherently skilled; the closed loop is the evidence that skilled surveillance was in place.
Management & evaluation of the plan
Coordinating the provider, the representative, the interventions, and any transfer, and revising the plan, require RN judgment.