US · guidance
CMS Pub. 100-18, ch. 14, § 50.10
Sharing Formulary Information with Other Payers
Although Part D sponsors may share detailed information about their formularies (in
electronic format) with other payers upon request, there is no specific requirement that they
do so. CMS has made the Medicare Prescription Drug plan information available in Public
Use Files (PUFs). These files contain all plan and formulary data for all of the plans with
the exception of the pricing data, which is considered proprietary. This is the only data set
that is publicly available. Further information is available on the CMS Website; see
Appendix B for the specific Web address.
In addition, as required by § 423.120(b)(5)(i), sponsors are required to inform other payers
of formulary changes (i.e., formulary deletions or changes in the tiering status of a drug) at
least 60 days in advance of the change. This may be accomplished by posting the new or
changed information on Part D sponsor Websites.
History
(Rev. 17, Issued: 08 -23-13, Effective Date: 06-07-10, Imple mentation Date : 01-01-11)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-09-17
- Edition
- iom-2026-09-17
- Content hash
b0f7dab19375efee590fd6693b9be9cbea607dbdb7dc550ac00f98df408c5455
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