---
kind: "section"
citation: "45 C.F.R. § 164.400"
title: "45"
number: "164.400"
heading: "Applicability."
url: "https://uscodex.org/cfr/45/164.400"
---

# §164.400. Applicability.


The requirements of this subpart shall apply with respect to breaches of protected health information occurring on or after September 23, 2009.


## Notes

### Source

Source: 74 FR 42767, Aug. 24, 2009, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 1302(a); 42 U.S.C. 1320d-1320d-9; sec. 264, Pub. L. 104-191, 110 Stat. 2033-2034 (42 U.S.C. 1320d-2(note)); and secs. 13400-13424, Pub. L. 111-5, 123 Stat. 258-279.

### Source

Source: 65 FR 82802, Dec. 28, 2000, unless otherwise noted.