US · guidance
CMS Pub. 100-16, ch. mc86c17f, § 20.3
Drugs That Are Covered Under Original Medicare
(Rev. 77, Issued: 10-28-05, Effective Date: 10-28-05)
(Chapter 4, §20.9 of the Medicare Managed Care Manual) For this subsection, the term
“drug” means “drug or biological.” As indicated in §10.1, a Medicare cost plan must
provide its enrollees with coverage of all drugs covered under original Medicare Part B.
Part B Medicare covers drugs in a limited number of cases including the following:
• Drugs that the Medicare cost plan enrollee takes while using durable medical
equipment (such as nebulizers) that were authorized by the enrollee’s
Medicare cost plan;
• Clotting factors if the enrollee is diagnosed with specific blood-clotting
disorders;
• Immunosuppressive drugs, if the enrollee had an organ transplant that was
covered by Medicare;
• Injectable osteoporosis drugs, if the enrollee has a bone fracture that a doctor
certifies was related to post-menopausal osteoporosis, and cannot self-administer the drug;
• Antigens;
• Certain oral anti-cancer drugs and anti-nausea drugs; and
• Erythropoietin by injection if the member has end-stage renal disease and
needs this drug to treat anemia.
• Not Usually Self-Administered (NUSA) Drugs. If a drug is defined as: (a)
not usually self-administered (NUSA) by the carrier in the area covered by the
Medicare cost plan, and (b) the drug is delivered incident to a physician
service, then it is classified as a Medicare-covered drug under Part B. Some
Medicare cost plans contract with specialty pharmacies to supply NUSA
drugs to their providers, instead of having the provider purchase and bill the
plan. If the drugs are furnished incident to a physician's service and they are
covered in that setting by the carrier whose coverage decisions are followed
by the Medicare cost plan, they are still classified as Part B drugs --
regardless of the payment arrangements.
A Medicare cost plan cannot make their own determinations of what is a
Medicare-covered Part B drug; rather carriers make these determinations.
A NUSA drug obtained by an enrollee at a pharmacy is not covered under
Part B.
History
(Rev. 77, Issued: 10-28-05, Effective Date: 10-28-05)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
d2f96a5300060cb0562b3f92a4c50f1fa1305277a32c30611c5682d9a0f5abea
The link goes to the issuing authority’s own document — the one we read to produce this record. Where a source publishes whole titles rather than sections, your browser may need a moment to jump to the provision.
Unofficial copy of government-published law, reproduced from official sources with full provenance. Not an official publication; verify against official sources before relying on it in a filing. Records in the 'guidance' corpus, and only that corpus, are sub-regulatory (interpretive guidelines, survey procedures) and are not binding law. Validity bounds follow each jurisdiction's declared temporalBasis.