48 C.F.R. § 301.101 – Purpose.

(a) The Department of Health and Human Services (HHS) Acquisition Regulation (HHSAR) establishes uniform HHS acquisition policies and procedures that implement and supplement the Federal Acquisition Regulation (FAR).
(b)
1. (1) The HHSAR contains HHS policies that govern the acquisition process or otherwise control acquisition relationships between HHS' contracting activities and contractors. The HHSAR contains—
  1. (i) Requirements of law;
  2. (ii) HHS-wide policies;
  3. (iii) Deviations from FAR requirements; and
  4. (iv) Policies that have a significant effect beyond the internal procedures of HHS or a significant cost or administrative impact on contractors or offerors.
2. (2) Relevant internal procedures, guidance, and information not meeting the criteria in paragraph (b)(1) of this section are issued by HHS in other announcements, internal procedures, guidance, or information.