42 CFR § 417.533 - Part B carrier responsibilities.
---
identifier: "/us/cfr/t42/s417.533"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 417.533 - Part B carrier responsibilities."
title_number: 42
title_name: "Public Health"
section_number: "417.533"
section_name: "Part B carrier responsibilities."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "417"
part_name: "HEALTH MAINTENANCE ORGANIZATIONS, COMPETITIVE MEDICAL PLANS, AND HEALTH CARE PREPAYMENT PLANS"
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, and 300e, 300e-5, and 300e-9, and 31 U.S.C. 9701."
cfr_part: "417"
---
# 417.533 Part B carrier responsibilities.
In paying for Part B services furnished to its enrollees by suppliers, the HMO or CMP must—
(a) Determine the eligibility of individuals to receive those services through the HMO or CMP;
(b) Make proper coverage decisions and appropriate payment as authorized under § 421.200 of this chapter for the services for which its Medicare enrollees are eligible; and
(c) Carry out any other procedures that CMS may require.
[50 FR 1346, Jan. 10, 1985, as amended at 58 FR 38082, July 15, 1993; 60 FR 46230, Sept. 6, 1995]