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
Anticoagulation has a narrow therapeutic window with a reasonable potential for bleeding or thromboembolism; daily bleeding surveillance and INR interpretation require nursing judgment.
Covered skilled procedure; management & evaluation
Parenteral anticoagulant administration and INR-based protocol dosing are skilled services under Chapter 8.
