42 CFR 493.821 : Public Health (Part 1 To Parts 1009-1099) — (§ 482.1 To Parts 1009-1099) — Centers For Medicare & Medicaid Services, Department Of Health And Human Services (Continued) (§ 482.1 To Parts 601-699) — Standards And Certification (§ 482.1 To § 498.103) — Laboratory Requirements (§ 493.1 To § 493.2001) — Participation In Proficiency Testing For Laboratories Performing Nonwaived Testing (§ 493.801 To § 493.865) — Proficiency Testing By Specialty And Subspecialty For Laboratories Performing Tests Of Moderate Complexity (Including The Subcategory), High Complexity, Or Any Combination Of These Tests (§ 493.821 To § 493.865) — Condition: Microbiology.