Clinical Laboratory Improvement Amendments of 1988 (CLIA) Proficiency Testing (PT) Referral Categories
Guidance for: This memorandum to state survey agency directors clarifies final regulations about proficiency testing referral categories under the Clinical Laboratory Improvement Amendments of 1988 (CLIA).
Issued by: Centers for Medicare & Medicaid Services (CMS)
Issue Date: December 15, 2017
DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.