Medicare Claims Processing Manual (Pub. 100-04), Ch. 14 § 40
Payment for Ambulatory Surgery
40 - Payment for Ambulatory Surgery
(Rev. 11793; Issued:01-19-23; Effective: 02-21-23; Implementation: 02-21-23)
Prior to January 1, 2008, the ASC payment rate was a standard overhead amount based
on CMS’s estimate of a fair fee and the costs incurred by the ASCs providing the
procedure. The HCPCS codes for procedures covered in the ASC were grouped into 9
groups and a rate was set for each group. In CY 2007, the ASC payment rate for each
ASC covered procedure was based on the payment rates for the 9 groups, but capped at
the OPPS payment rate for the procedure.
Beginning January 1, 2008, with implementation of the revised ASC payment system, the
payment rates for most covered ASC surgical procedures and covered ancillary services
are established prospectively, based on a percentage of the OPPS payment rates. For
more information on where to locate these prospective payment rates, see §30.1. There
are a small number of covered ancillary services that are contractor-priced. These
include OPPS pass-through devices, which are paid separately and are contractor-priced
based on acquisition cost or invoice. Medicare pays the same amount for drugs and
biologicals that are paid separately under the OPPS when those drugs and biologicals are
provided integral to covered surgical procedures. New drugs and biologicals for which
product-specific HCPCS codes do not exist and are billed by ASCs using HCPCS code
C9399 (unclassified drug or biological), are also contractor-priced at 95 percent of the
average wholesale price (AWP). Medicare pays the same amount for brachytherapy
sources under the revised ASC payment system as it pays hospitals under the OPPS if
prospective rates are available. If prospective rates for brachytherapy sources are not
available under the OPPS, ASC payment for brachytherapy sources is made at contractor-
priced rates.
Under the revised ASC payment system effective January 1, 2008, Medicare makes
separate payment to ASCs for corneal tissue acquisition (which is billed using V2785).
Contractors pay for corneal tissue acquisition based on acquisition cost or invoice. In
addition, contractors make payment adjustments for new technology intraocular lenses
(NTIOLs). The NTIOL payment adjustment is an unadjusted payment subject to
beneficiary coinsurance but not subject to the wage index adjustments.
Beginning January 1, 2008, Medicare payment for implantable durable medical
equipment is included in the payment for the covered surgical procedure. The ASC
payment for the surgical procedure is a bundled payment which includes the payment for
the implantable items previously paid separately under the DMEPOS fee schedule. The
one exception to this is OPPS pass-through devices, which are paid separately.
Medicare contractors calculate payment for each separately payable procedure and
service based on the lower of 80 percent of actual charges or the ASC payment rate. The
charge-to-payment rate comparison occurs at the line-item level. ASCs should not report
separate line-item HCPCS codes or charges for items that are packaged into payment for
covered surgical procedures and therefore, are not paid separately (e.g., nonpass-through
implantable devices). Instead, it is important that ASCs incorporate charges for packaged
services into the charges reported for the separately payable services with which they are
provided. Facilities may not be paid appropriately if they unbundle charges and report
those charges for packaged codes as separate line-item charges.
Beginning January 1, 2008, covered ancillary items and services, such as pass-through
devices, brachytherapy sources, separately payable drugs and biologicals, and radiology
procedures, should be billed on the same claim as the related ASC surgical procedure(s).
If an ASC bills for an ancillary service(s) separately (i.e., not on the same claim as the
related surgical procedure) or a claim is split so that the ancillary service and related ASC
surgical service(s) are on separate claims, the contractor checks claims history to
determine if there is an approved surgical procedure for the same beneficiary, same
provider, and same date. If there is no approved ASC surgical procedure on the same
claim or in history for the same date, the ancillary service(s) shall be returned as
unprocessable.