Medicare Benefit Policy Manual (Pub. 100-02), Ch. 5 § 30.4.1
Hospitals Not Reimbursed Under Prospective Payment System
30.4.1 - Hospitals Not Reimbursed Under Prospective Payment System
(Rev. 1, 10-01-03)
A3-3106.2.D.1, HO-219.2.D.1
A beneficiary election not to use reserve days for a particular hospital stay may apply to
the entire stay or to a single period of consecutive days in the stay but cannot apply to
selected days in a stay. If an election (whether made prospectively or retroactively) not
to use reserve days is made effective with the first day for which reserve days are
available, it may be terminated at any time. After termination of the election, all hospital
days would be covered to the extent that reserve days are available. (Thus, an individual
who has private insurance that covers hospitalization beginning with the first day after 90
days of benefits have been exhausted, may terminate the election as of the first day not
covered by the insurance plan.) If an election not to use reserve days is made effective
beginning with any day after the first day for which reserve days are available, it must
remain in effect until the end of that stay unless the entire election is revoked in
accordance with §40.2.