Medicare Claims Processing Manual (Pub. 100-04), Ch. 14 § 20.2
Types of Services Included on the ASC Covered Procedures List
20.2 - Types of Services Included on the ASC Covered Procedures List
(Rev. 11793; Issued:01-19-23; Effective: 02-21-23; Implementation: 02-21-23)
The ASC list of covered surgical procedures is comprised of surgical procedures that
CMS determines do not pose a significant safety risk and are not expected to require an
overnight stay following the surgical procedure.
Surgical procedures are defined as Category I CPT codes within the surgical range of
CPT codes, 10000 through 69999. Also considered to be included within that code range
are procedures that are described by Level II HCPCS, Category I CPT codes, or Category
III CPT codes that directly crosswalk to or are clinically similar to the Category I CPT
codes in the surgical range that we have determined do not pose a significant safety risk,
would not expect to require an overnight stay when performed in an ASC, and are
separately paid under the OPPS.
The surgical codes that are included on the ASC list of covered surgical procedures are
separately paid under the OPPS, have been determined to pose no significant safety risk
to Medicare beneficiaries when furnished in ASCs, and for which standard medical
practice dictated that the beneficiary would not typically be expected to require active
medical monitoring and care at midnight following the procedure (overnight stay).
Additionally, covered surgical procedures do not include those surgical procedures
that: (1) generally result in extensive blood loss; (2) require major or prolonged
invasion of body cavities; (3) directly involve major blood vessels; (4) are
generally emergent or life threatening in nature; (5) commonly require systemic
thrombolytic therapy; (6) are designated as requiring inpatient care under
§ 419.22(n); (7) can only be reported using a CPT unlisted surgical procedure
code; or (8) are otherwise excluded under § 411.15.
Procedures that are included on the inpatient list used under Medicare’s hospital
outpatient prospective payment system are deemed to pose significant safety risk to
beneficiaries in ASCs and are not eligible for designation and coverage as ASC covered
surgical procedures. Procedures that can only be reported by using an unlisted Category I
CPT code are excluded from consideration because there are no specifically descriptive
codes that can be evaluated for safety risk.