---
kind: "unit"
title: "42"
title_heading: "Public Health"
key: "chIV/subchB/part423/subpartS"
level: "subpart"
label: "Subpart S"
heading: "Special Rules for States-Eligibility Determinations for Subsidies and General Payment Provisions"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/42/chIV-subchB-part423-subpartS"
sections_count: 7
---

# Subpart S — Special Rules for States-Eligibility Determinations for Subsidies and General Payment Provisions

Title 42 C.F.R. — Public Health › Chapter IV — Centers for Medicare & Medicaid Services, Department of Health and Human Services › Subchapter B — Medicare Program › Part 423 — Voluntary Medicare Prescription Drug Benefit

## Sections

- [§423.900. Basis and scope.](/cfr/42/423.900.md)
- [§423.902. Definitions.](/cfr/42/423.902.md)
- [§423.904. Eligibility determinations for low-income subsidies.](/cfr/42/423.904.md)
- [§423.906. General payment provisions.](/cfr/42/423.906.md)
- [§423.907. Treatment of territories.](/cfr/42/423.907.md)
- [§423.908. Phased-down State contribution to drug benefit costs assumed by Medicare.](/cfr/42/423.908.md)
- [§423.910. Requirements.](/cfr/42/423.910.md)