The correct answer is A.
Feedback: Mrs. Diamond will not qualify for a new stay as she was readmitted within the 3-day window that begins on the day of discharge and includes the two calendar days immediately following, ending at midnight on the third calendar day. She will be admitted as an interrupted stay, and her variable per diem rate will reset to Day 13, which was the day she was discharged. Her assessment schedule will resume. No 5-day assessment will be required, and the IPA will be optional. In the case of an interrupted stay, CMS has clarified that no PPS assessments are required, including a PPS Discharge assessment. However, OBRA assessment requirements still exist and an OBRA Discharge would need to be completed.