Prescribing rules that may be substituted for this PBS Item. If a substitute prescribing
rule is specified, there would normally be only one given. It is theoretically possible
that two or more substitute prescribing rules are given (for example, one in the HB
program and the other in the HS program), in which case the processing system must
use other information from the claim to determine the appropriate prescribing rule
to substitute.
Product listings that may be substituted for this product listing. If a substitute
product listing is specified, there would normally be only one given. It is theoretically
possible that two or more substitute product listings are given (for example, one
in the HB program and the other in the HS program), in which case the processing system
must use other information from the claim to determine the appropriate product listing
to substitute. Note that brand substitution will also give alternate product listings
that may be subsituted for this product listing.