US · guidance
CMS Pub. 100-18, ch. 6, § 30.2.2.3
Application of Prior Authorization
Part D sponsors should consistently utilize PA for those drugs with the highest likelihood of non-Part D covered uses, based on the following definitions:
• High likelihood that coverage is available under Parts A or B (versus D) for the drug as
prescribed and dispensed or administered, as discussed in section 20.2 of this chapter,
• High likelihood that the drug is excluded from Part D coverage (e.g., a drug or drug
class or its medical use that is excluded from coverage or otherwise restricted under Part
D as defined in section 1927(d)(2) of the Act), or
• High likelihood of use for non-medically accepted indications as defined in section
1860D-2(E)(4) of the Act (see section 10.6).
CMS recognizes that sponsors utilize standard PA forms to facilitate the collection of
information necessary to fulfill the PA. However, CMS has identified several non-allowable
practices that cannot be included on prior authorization forms, examples of which are provided
below:
• Requirements more restrictive than CMS-approved prior authorization criteria.
• Limited Access or Step Therapy restrictions not consistent with the CMS-approved
formulary.
• Quantity Limits inconsistent with FDA maximum dosing or not consistent with the CMS-approved formulary.
• Prior Authorization criteria not submitted for HPMS approved formulary medications.
• Steering of physicians or beneficiaries to a sponsor’s and/or PBM’s own mail order
pharmacy.
Steering of physicians or beneficiaries to a sponsor’s and/or PBM’s own specialty pharmacy for
any drugs which are not restricted to select pharmacies based on manufacturer or FDA
distribution limitations.
History
(Rev. 18, Issued: 01-15-16, Effective: 01-15-16; Implementation: 01-15-16)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-09-17
- Edition
- iom-2026-09-17
- Content hash
f3315547ae4e5cfcb3f53ca57057c9c1a6c21adc195d8f606d5c88898661ed12
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