42 CFR § 417.566 - Other methods of allocation and apportionment.
---
identifier: "/us/cfr/t42/s417.566"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 417.566 - Other methods of allocation and apportionment."
title_number: 42
title_name: "Public Health"
section_number: "417.566"
section_name: "Other methods of allocation and apportionment."
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"
---
# 417.566 Other methods of allocation and apportionment.
(a) *Justification.* A method of apportionment or allocation of costs, other than the methods prescribed in this subpart may be used if it results in a more accurate and equitable apportionment of allowable costs and is justifiable from an administrative and cost standpoint.
(b) *Required approval.* (1) An HMO or CMP that desires to use an alternative method must submit a written request for CMS approval at least 90 days before the beginning of the period for which the different method is to be used.
(2) If CMS approves use of a different method, the HMO or CMP may not revert to another method without first obtaining CMS's approval.
[50 FR 1346, Jan. 10, 1985, as amended at 58 FR 38082, July 15, 1993]