---
kind: "section"
citation: "42 C.F.R. § 512.325"
title: "42"
number: "512.325"
heading: "Participant selection and geographic areas."
url: "https://uscodex.org/cfr/42/512.325"
---

# §512.325. Participant selection and geographic areas.

- (a) **Selected participants.** All Medicare-certified ESRD facilities and Medicare-enrolled Managing Clinicians located in a selected geographic area are required to participate in the ETC Model.
- (b) **Selected Geographic Areas.** CMS establishes the Selected Geographic Areas by selecting all HRRs for which at least 20 percent of the component zip codes are located in Maryland, and a random sample of 30 percent of HRRs, stratified by Census-defined regions (Northeast, South, Midwest, and West). CMS excludes all U.S. Territories from the Selected Geographic Areas.

## Notes

### Authority

Authority: 42 U.S.C. 1302, 1315a, and 1395hh.

### Source

Source: 85 FR 61362, Sept. 29, 2020, unless otherwise noted.