42 C.F.R. § 457.925 Preliminary investigation.
Title 42 - Public Health
If the State agency receives a complaint of fraud or abuse from any source or identifies questionable practices, the State agency must conduct a preliminary investigation or take otherwise appropriate action within a reasonable period of time to determine whether there is sufficient basis to warrant a full investigation.
Title 42: Public Health
PART 457—ALLOTMENTS AND GRANTS TO STATES
Subpart I—Program Integrity
§ 457.925 Preliminary investigation.