US · guidance
CMS Pub. 100-04, ch. 4, § 10.9
Updates
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
prospective payment system 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
non-terminal illness.
By statute, CMS is required to review and revise the APC groups, relative payment
rates, wage adjustments, outlier payments and other adjustments required under the
OPPS on an annual basis. These annual updates are made final through the
publication of proposed and final rules in the Federal Register. The annual update
Federal Register rules can be accessed on the OPPS Web site at:
http://www.cms.gov/Medicare/Medicare-Fee-for-Service-
Payment/HospitalOutpatientPPS/
In addition to the annual update at the beginning of each calendar year, we also update
the OPPS on a quarterly basis to account for mid-year changes such as adding new
passthrough drugs and/or devices, adding new treatments and procedures to the new
technology APCs, removing procedures from the inpatient list, and recognizing new
HCPCS codes that may be added during the year. The quarterly updates are issued as
Recurring Update Notifications. The quarterly Recurring Update Notifications can be
found in Pub. 100-21, Recurring Update Notification, which can be accessed at the
following Web site: http://www.cms.gov/Regulations-
andGuidance/Guidance/Manuals/Internet-Only-Manuals-IOMs.html
10.10 - Biweekly Interim Payments for Certain Hospital Outpatient
Items and Services That Are Paid on a Cost Basis, and Direct Medical
Education Payments, Not Included in the Hospital Outpatient
Prospective Payment System (OPPS)
(Rev. 1, 10-03-03)
A-01-32
For hospitals subject to the OPPS, payment for certain items that are not paid under the
OPPS, but which are reimbursable in addition to OPPS, are made through biweekly
interim payments subject to retrospective adjustment based on a settled cost report.
These payments include:
• Direct medical education payments;
• Costs of nursing and allied health programs;
• Costs associated with interns and residents not in an approved teaching program
as described in 42 CFR 415.202;
• Teaching physicians costs attributable to Part B services for hospitals that elect
cost-based reimbursement for teaching physicians under 42 CFR 415.160;
• CRNA services;
• For hospitals that meet the requirements under 42 CFR 412.113(c), the reasonable
costs of anesthesia services furnished to hospital outpatients by qualified
nonphysician anesthetists (i.e., certified registered nurse anesthetists and
anesthesiologists’ assistants) employed by the hospital or obtained under
arrangements;
• Bad debts for uncollectible deductibles and coinsurance;
• Organ acquisition costs paid under Part B.
For hospitals that are paid under the OPPS, interim payments for these items attributable
to both hospital outpatients, as well as inpatients whose services are paid under Part B of
the Medicare program are made on a biweekly basis. The A/B MAC (A) determines the
amount of the biweekly payment by estimating a hospital’s reimbursement amount for
these items for the cost reporting period by using:
• Medicare principles of cost reimbursement for cost-based items; and
• Medicare rules for determining payment for graduate medical education for direct
medical education, and dividing the total annual estimated amount for these items
into 26 equal biweekly payments.
The estimated annual amount is based on the most current data available. Biweekly
interim payments are reviewed and, if necessary, adjusted at least twice during the
reporting period, with final settlement based on a submitted cost report.
Because hospitals subject to the OPPS have not received payment for these items
attributable to services furnished on or after August 1, 2000, the date the OPPS was
implemented, the first payment to each hospital included all the payments due to the
hospital retroactive to August 1, 2000. Thereafter, A/B MACs (A) continue to make
payment on a biweekly basis. Each payment is made two weeks after the end of a
biweekly period of services. The A/B MAC (A) was required to make retroactive
payments and begin making biweekly interim payments to all hospitals that are due these
payments no later than 60 days after March 8, 2001.
These biweekly payments may be combined with the inpatient biweekly payments that
the A/B MAC (A) makes under §2405.2 of the Medicare Provider Reimbursement
Manual (CMS Pub.15-I). However, if a single payment is made, for purposes of final
cost report settlement, they must maintain records to separately identify the amount of the
hospital’s combined payment that is paid out of the Part A or Part B trust fund.
10.11 - Calculation of Overall Cost-to-Charge Ratios (CCRs) for
Hospitals Paid Under the Outpatient Prospective Payment System
(OPPS) and Community Mental Health Centers (CMHCs) Paid Under
the Hospital OPPS
(Rev. 1445, Issued: 02-08-08; Effective: 01-01-08; Implementation: 03-10-08)
History
(Rev. 12423; Issued: 12-20-23; Effective: 01-01-24; Implementation: 01-02-24)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
5ceac67e92ec061189aba21bed4f8fac2e52cf0c423a3bba3bc1ae80dd81cd14
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