US · guidance
CMS SOM App. L, Tag Q-0063
§416.42(b) - Standard: Administration of Anesthesia
Anesthetics must be administered by only-
(1) A qualified anesthesiologist, or
(2) A physician qualified to administer anesthesia, a certified registered nurse
anesthetist (CRNA) or an anesthesiologist’s assistant as defined in §410.69(b)
of this chapter, or a supervised trainee in an approved educational program.
In those cases in which a non-physician administers the anesthesia, unless
exempted in accordance with paragraph (c) of this section, the anesthetist
must be under the supervision of the operating physician, and in the case of
an anesthesiologist’s assistant, under the supervision of an anesthesiologist.
§416.42(c) - Standard: State Exemption
(1) An ASC may be exempted from the requirement for physician supervision of
CRNAs as described in paragraph (b)(2) of this section, if the State in which
the ASC is located submits a letter to CMS signed by the Governor, following
consultation with the State’s Boards of Medicine and Nursing, requesting
exemption from physician supervision of CRNAs. The letter from the
Governor must attest that he or she has consulted with State Boards of
Medicine and Nursing about issues related to access to and the quality of
anesthesia services in the State and has concluded that it is in the best
interests of the State’s citizens to opt-out of the current physician supervision
requirement, and that the opt-out is consistent with State law.
(2) The request for exemption and recognition of State laws, and the withdrawal
of the request may be submitted at any time, and is effective upon
submission.
Interpretive Guidelines: §416.42(b) & (c)
The ASC’s policies and procedures must include criteria, consistent with State law
governing scope of professional practice and other applicable State law, for determining
the anesthesia privileges to be granted by the governing body to an eligible individual
practitioner and a procedure for applying the criteria to individuals requesting privileges.
The ASC must specify the anesthesia privileges for each practitioner who administers
anesthesia, or who supervises the administration of anesthesia by another practitioner.
The privileges granted must be in accordance with State law and the ASC’s policy. The
type and complexity of procedures for which the practitioner may administer anesthesia,
or supervise another practitioner supervising anesthesia, must be specified in the
privileges granted to the individual practitioner.
When granting anesthesia privileges to a physician who is not an anesthesiologist, the
ASC’s governing body must consider the practitioner’s scope of practice, State law, the
individual competencies, education, and training of the practitioner and the practitioner’s
compliance with the ASC’s other criteria for granting physician privileges.
When an ASC permits operating physicians to supervise CRNAs administering
anesthesia, the governing body must adopt written policies that explicitly provide for this.
A CRNA is defined at §410.69(b) as a “…registered nurse who:
(1) is licensed as a registered professional nurse by the State in which the nurse
practices;
(2) meets any licensure requirements the State imposes with respect to non-physician anesthetists;
(3) has graduated from a nurse anesthesia educational program that meets the
standards of the Council on Accreditation of Nurse Anesthesia Programs, or
such other accreditation organization as may be designated by the Secretary;
and
(4) meets the following criteria:
(i) has passed a certification examination of the Council on Certification of
Nurse Anesthetists, or any other certification organization that may be
designated by the Secretary; or
(ii) is a graduate of a program described in paragraph (3) of this definition and
within 24 months after that graduation meets the requirements of paragraph
(4)(i) of this definition.” A CRNA may administer anesthesia in an ASC
when under the supervision of the operating physician.
If the ASC is located in a State where the Governor has submitted a letter to CMS
attesting that he or she has consulted with State Boards of Medicine and Nursing about
issues related to access to and the quality of anesthesia services in the State, and has
concluded that it is in the best interests of the State’s citizens to opt-out of the current
physician supervision requirement, and that the opt-out is consistent with State law, then
a CRNA may administer anesthesia without physician supervision.
An anesthesiologist’s assistant is defined at §410.69(b) as a “…person who – (1) works
under the direction of an anesthesiologist; (2) is in compliance with all applicable
requirements of State law, including any licensure requirements the State imposes on
nonphysician anesthetists; and (3) is a graduate of a medical school-based
anesthesiologist’s assistant education program that – (A) is accredited by the Committee
on Allied Health Education and Accreditation; and (B) includes approximately two years
of specialized basic science and clinical education in anesthesia at a level that builds on a
premedical undergraduate science background.” An anesthesiologist’s assistant may
administer anesthesia when under the direct supervision of an anesthesiologist. The
anesthesiologist must be immediately available if needed, meaning the anesthesiologist
is:
• Physically present in the ASC; and
• Prepared to immediately conduct hands-on intervention if needed.
A trainee who is a physician in training to be an anesthesiologist in a recognized graduate
medical education program, or a student in a recognized nurse anesthesia or
anesthesiologist’s assistance educational program may administer anesthesia in an ASC
when supervised by the operating physician, in the case of a nurse anesthetist trainee, or
by an anesthesiologist, in the case of a physician trainee or an anesthesiologist’s assistant
trainee.
Survey Procedures: §§482.42(b) and (c)
• Prior to the survey, determine whether the State has exercised its CRNA
physician supervision opt-out option.
• Review the qualifications of individuals authorized to deliver anesthesia in the
ASC, to determine whether they are consistent with the regulatory requirements.
• Determine that there is documentation of current licensure or current certification
status for all persons administering anesthesia.
• If the ASC uses CRNAs, anesthesiologist’s assistants or trainees, interview the
ASC’s leadership to determine how they are supervised. Do the medical records
indicate that required physician supervision is provided?
• When observing a procedure, look for evidence of appropriately trained
practitioners with supervision as required by the regulations.
History
Rev. 56, Issued: 12-30-09, Effective/Implementation: 12-30-09
Provenance
- Source
- cms.gov
- Retrieved
- 2026-07-22
- Edition
- som-2026-07-22
- Content hash
e1e31849a665f6b792431b95ca744a8a409872b9be2c96d00b1f5ffb31180f2b
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