42 C.F.R. § 488.720 – Extended surveys.

(a) Purpose of survey. The purpose of an extended survey is:
1. (1) To review and identify the policies and procedures that caused an HHA to furnish substandard care.
2. (2) To determine whether the HHA is in compliance with one or more or all additional conditions of participation not examined during the standard survey.
(b) Timing and basis for survey. An extended survey must be conducted not later than 14 calendar days after completion of a standard survey which found that a HHA was out of compliance with a condition of participation.