Wisconsin Code § 450.135

Using interchangeable biological product in dispensing prescriptions
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(1) DEFINITION. In this section,
“interchangeable biological product” means a biological product
that the federal food and drug administration has licensed and has
determined meets the standards for interchangeability pursuant to
42 USC 262 (k) (4) or has determined is therapeutically equivalent as set forth in the latest edition of or supplement to the federal food and drug administration’s Approved Drug Products
with Therapeutic Equivalence Evaluations.
(2) BIOLOGICAL PRODUCT OR INTERCHANGEABLE BIOLOGICAL PRODUCT TO BE USED. Except as provided in sub. (3), a pharmacist shall dispense every prescription using either the biological product prescribed or an interchangeable biological product,
if the interchangeable biological product is lower in price to the
consumer than the biological product prescribed, and shall inform the consumer of the options available in dispensing the
prescription.
(3) EXCEPTION. A prescribing practitioner may indicate, by
writing on the face of the prescription order or, with respect to a
prescription order transmitted electronically, by designating in
electronic format the phrase “No substitutions” or words of similar meaning or the initials “N.S.,” that no substitution of the biological product prescribed may be made under sub. (2). If such
indication is made, the pharmacist shall dispense the prescription
with the specific biological product prescribed. No preprinted

statement regarding biological product substitution may appear
on the face of the prescription order.
(4) REFILLED PRESCRIPTIONS. Prescriptions dispensed with
an interchangeable biological product may be refilled with a different interchangeable biological product only if the pharmacist
informs the consumer of the change.
(5) COMMUNICATION OF BIOLOGICAL PRODUCT DISPENSED.
Within 5 business days after the dispensing of a biological product, the dispensing pharmacist or the pharmacist’s designee shall
do one of the following:
(a) Make an entry of the specific product provided to the patient, including the name of the product and the manufacturer.
Entry into an electronic records system as described in this paragraph is presumed to provide notice to the prescribing practitioner. The communication shall be conveyed by making an entry that is electronically accessible to the prescribing practitioner
through one of the following:
1. An interoperable electronic medical records system.
2. An electronic prescribing technology.
3. A pharmacist benefit management system.
4. A pharmacy record.
(b) If a pharmacist is unable to make an entry as provided in
par. (a), communicate the biological product dispensed to the prescribing practitioner using facsimile, telephone, electronic transmission, or another prevailing means, except that communication
under this paragraph is not required if any of the following
applies:
1. There is no interchangeable biological product for the
product prescribed.
2. A refill of the biological product is not changed from the
product dispensed on the prior filling of the prescription.
(6) LIMITATION OF LIABILITY. A pharmacist who dispenses a
prescription with an interchangeable biological product under
this section assumes no greater liability than would be incurred
had the pharmacist dispensed the prescription with the biological
product prescribed.
(7) USE OF INTERCHANGEABLE BIOLOGICAL PRODUCT IN
HOSPITALS. Subsections (2) to (6) do not apply to a pharmacist
who dispenses an interchangeable biological product that is prescribed for a patient in a hospital if the pharmacist dispenses the
interchangeable biological product in accordance with written
guidelines or procedures previously established by a pharmacy
and therapeutics committee of the hospital and approved by the
hospital’s medical staff and use of the interchangeable biological
product has been approved for a patient during the period of the
patient’s stay within the hospital by any of the following:
(a) The patient’s individual physician.
(b) The patient’s advanced practice registered nurse, if the advanced practice registered nurse may issue prescription orders
under s. 441.09 (2).
(8) APPLICABILITY. This section applies only with respect to
prescriptions for biological products.
(8m) DISCLOSURE TO CONSUMERS. Each pharmacy shall
post in a prominent place at or near the place where prescriptions
are dispensed a sign that clearly describes a pharmacist’s ability
under this state’s law to substitute a less expensive interchangeable biological product under sub. (2) unless the consumer or the
prescribing practitioner has indicated otherwise under sub. (3).
(9) LINKS TO BE MAINTAINED BY BOARD. The board shall
maintain links on the department’s Internet site to the federal
food and drug administration’s lists of all currently approved interchangeable biological products. Each pharmacy shall make
available for the public information on how to access the federal
food and drug administration’s lists of all currently approved interchangeable biological products through the department’s Internet site.

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