42 CFR § 419.90 - Basis and scope of subpart.

---
identifier: "/us/cfr/t42/s419.90"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "42 CFR § 419.90 - Basis and scope of subpart."
title_number: 42
title_name: "Public Health"
section_number: "419.90"
section_name: "Basis and scope of subpart."
chapter_name: "CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "B"
subchapter_name: "MEDICARE PROGRAM"
part_number: "419"
part_name: "PROSPECTIVE PAYMENT SYSTEMS FOR HOSPITAL OUTPATIENT DEPARTMENT SERVICES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 1302, 1395l(t), and 1395hh."
regulatory_source: "65 FR 18542, Apr. 7, 2000, unless otherwise noted."
cfr_part: "419"
---


# 419.90 Basis and scope of subpart.

(a) *Basis.* This subpart implements sections 1861(kkk) and 1834(x) of the Act, which establish the rural emergency hospital Medicare provider type and the payment requirements applying to such entities.

(b) *Scope.* This subpart describes the methodologies used to determine payment for REH services and the monthly facility payment amount paid to REHs.