US · guidance
CMS SOM App. C, Tag D8303
(b) Subsequent inspections
(1) CMS or a CMS agent may conduct subsequent
inspections on a biennial basis or with such other frequency as CMS determines to
be necessary to ensure compliance with the requirements of this part.
(b)(2) CMS bases the nature of subsequent inspections on the laboratory’s
compliance history.
Interpretive Guidelines §493.1777(b)
In any laboratory holding a CLIA certificate, tests listed on the waived list are not subject
to routine surveys. A survey for waived tests may be conducted only when authorized by
CMS in one of the following instances:
• To collect information on waived tests;
• To determine whether the laboratory is testing beyond its certificate;
• If a complaint is alleged; or
• You have information that the performance of such tests poses an imminent and
serious risk that adversely affects patient test results.
When authorized to perform a survey of waived tests, in addition to the requirements in
this subpart, refer to the requirements at §493.15, subpart A, and §§493.35, 493.37 and
493.39, subpart B, of these guidelines.
Section 493.35(d) requires that laboratories performing only waived tests and no other
tests must agree to permit inspections by HHS in order to receive a certificate of waiver.
Make every effort to minimize the impact of the survey on the laboratory operations and
patient care activities. Be flexible; accommodate staffing schedules and workloads as
much as possible. In facilities providing direct patient care, (i.e., physician’s offices,
clinics, residential care facilities, hospitals, etc.), respect patient privacy and do not
interrupt or interfere with patient care. Be well prepared, courteous and make requests,
not demands.
History
Rev. 233; Issued: 09-12-25; Effective: 09-12-25; Implementation: 09-12-25
Provenance
- Source
- cms.gov
- Retrieved
- 2026-07-22
- Edition
- som-2026-07-22
- Content hash
b7f910c4813f15f025d9ea2ad7df1ec8e422d35aeb58fca078ce19583a30d8c4
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