Medicare Claims Processing Manual (Pub. 100-04), Ch. 4 § 10.1
Background
10.1 - Background
(Rev. 12423; Issued: 12-20-23; Effective: 01-01-24; Implementation: 01-02-24)
Section 1833(t) of the Social Security Act (the Act) as amended by §4533 of the
Balanced Budget Act (BBA) of 1997, authorizes CMS to implement a Medicare PPS
for:
• Hospital outpatient services, including partial hospitalization and
intensive outpatient services;
• Certain Part B services furnished to hospital inpatients who have no Part
A coverage;
• Partial hospitalization and intensive outpatient services furnished by
CMHCs;
• Hepatitis B vaccines and their administration, splints, cast, and antigens
provided by HHAs that provide medical and other health services;
• Hepatitis B vaccines and their administration provided by CORFs; and
• Splints, casts, and antigens provided to hospice patients for treatment of
nonterminal illness.
The Balanced Budget Refinement Act of 1999 (BBRA) contains a number of major
provisions that affect the development of the OPPS. These are:
• Establish payments under OPPS in a budget neutral manner based on
estimates of amounts payable in 1999 from the Part B Trust Fund and as
beneficiary coinsurance under the system in effect prior to OPPS
(Although the base rates were calculated using the 1999 amounts, these
amounts are increased by the hospital inpatient market basket, minus one
percent, to arrive at the amounts payable in the year 2000. See §10.3 for
Benefits and Improvement Protection Act (BIPA) changes in market
basket updates.);
• Extend the 5.8 percent reduction in operating costs and 10 percent
reduction in capital costs (which had been due to sunset on December 31,
1999) through the first date the OPPS is implemented;
• Require annual updating of the OPPS payment weights, rates, payment
adjustments and groups;
• Require annual consultation with an expert provider advisory panel in
review and updating of payment groups;
• Establish budget neutral outlier adjustments based on the charges,
adjusted to costs, for all OPPS services included on the submitted
outpatient bill for services furnished before January 1, 2002, and
thereafter based on the individual services billed;
• Provide transitional pass-through payment for the additional costs of new
and current medical devices, drugs, and biologicals for at least two years
but not more than three years;
• Provide payment under OPPS for implantable devices including durable
medical equipment (DME), prosthetics and those used in diagnostic
testing;
• Establish transitional payments to limit provider’s losses under OPPS; the
additional payments are for 3 1/2 years for CMHCs and most hospitals,
and permanent for the 10 cancer hospitals; and
• Limit beneficiary coinsurance for an individual service paid under OPPS
to the inpatient hospital deductible.
The Medicare, Medicaid, and SCHIP Benefits Improvement and Protection Act of
2000 (BIPA), which was signed into law on December 21, 2000, made a number of
revisions to the Outpatient Prospective Payment System (OPPS). These are:
• Accelerated reductions of beneficiary copayments;
• Increase in market basket update for 2001;
• Transitional corridor provision for transitional outpatient payments
(TOPs) for providers that did not file 1996 cost reports; and
• Special transitional corridor treatment for children’s hospitals.
The Secretary has the authority under §1883(t) of the Act to determine which services
are included (with the exception of ambulance services for which a separate fee
schedule is applicable starting April 1, 2002). Medicare will continue to pay for
clinical diagnostic laboratory services, orthotics, prosthetics (except as noted above),
and for take-home surgical dressings on their respective fee schedules. Medicare will
also continue to pay for chronic dialysis using the composite rate (certain CRNA
services, PPV, and influenza vaccines and their administration, orphan drugs, and
ESRD drugs and supplies are not included in the composite rate), for screening
mammographies based on the current payment limitation, which changes to payment
under the Medicare Physician Fee Schedule (MPFS), effective January 1, 2002, and
for outpatient rehabilitation services (physical therapy including speech language
pathology and occupational therapy) under the MPFS. Acute dialysis, e.g., for
poisoning, will be paid under OPPS. The 10 cancer centers exempt from inpatient
PPS are included in this system, but are eligible for hold harmless payment under the
Transitional Corridor provision.
The Outpatient Prospective Payment System (OPPS) applies to all hospital outpatient
departments except for hospitals that provide Part B only services to their inpatients;
Critical Access Hospitals (CAHs); Indian Health Service hospitals; hospitals located
in American Samoa, Guam, and Saipan; hospitals located in the Virgin Islands; and
effective January 1, 2017 non-excepted off-campus provider-based departments of a
hospital. The OPPS also applies to partial hospitalization and intensive outpatient
services furnished by Community Mental Health Centers (CMHCs).
Certain hospitals in Maryland that are paid under Maryland waiver provisions are also
excluded from payment under OPPS but not from reporting Healthcare Common
Procedure Coding System (HCPCS) and line item dates of service.