US · guidance
CMS Pub. 100-04, ch. 12, § 140.3.2
Anesthesia Time and Calculation of Anesthesia Time Units
Anesthesia time means the time during which a qualified nonphysician anesthetist is
present with the patient. It starts when the qualified nonphysician anesthetist begins to
prepare the patient for anesthesia services in the operating room or an equivalent area
and ends when the qualified nonphysician anesthetist is no longer furnishing anesthesia
services to the patient, that is, when the patient may be placed safely under
postoperative care. Anesthesia time is a continuous time period from the start of
anesthesia to the end of an anesthesia service. In counting anesthesia time, the qualified
nonphysician anesthetist can add blocks of time around an interruption in anesthesia
time as long as the qualified nonphysician anesthetist is furnishing continuous
anesthesia care within the time periods around the interruption.
History
(Rev. 3747; Issued: 04-14-17; Effective: 01-01-17; Implementation: 05-15-17)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
116cde4e01a71b6953cdc567c7868beab192ce791d696970324fbbb3a554ca9c
The link goes to the issuing authority’s own document — the one we read to produce this record. Where a source publishes whole titles rather than sections, your browser may need a moment to jump to the provision.
Unofficial copy of government-published law, reproduced from official sources with full provenance. Not an official publication; verify against official sources before relying on it in a filing. Records in the 'guidance' corpus, and only that corpus, are sub-regulatory (interpretive guidelines, survey procedures) and are not binding law. Validity bounds follow each jurisdiction's declared temporalBasis.