42 CFR § 408.201 - Definitions.
---
identifier: "/us/cfr/t42/s408.201"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 408.201 - Definitions."
title_number: 42
title_name: "Public Health"
section_number: "408.201"
section_name: "Definitions."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "408"
part_name: "PREMIUMS FOR SUPPLEMENTARY MEDICAL INSURANCE"
positive_law: false
currency: "2026-03-24"
last_updated: "2026-03-24"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 1302 and 1395hh."
regulatory_source: "52 FR 48115, Dec. 18, 1987, unless otherwise noted."
cfr_part: "408"
---
# 408.201 Definitions.
For purposes of this subpart, the following definitions apply:
*SMI premium surcharge* means the amount that the standard monthly SMI premium is increased for late enrollment or for reenrollment as specified in §§ 408.22 through 408.25.
*SMI premium surcharge agreement* means a written arrangement between the Secretary and a State or local government agency to pay, on a quarterly, monthly, or other periodic basis, a lump sum for the SMI premium surcharge amounts due for a designated group of eligible enrollees.