42 CFR § 410.160 - Part B annual deductible.
(a) Basic rule. Except as provided in paragraph (b) of this section, incurred expenses (as defined in § 410.152) are subject to, and count toward meeting the annual deductible.
(b) Exceptions. Expenses incurred for the following services are not subject to the Part B annual deductible and do not count toward meeting that deductible:
(1) Home health services.
(2) Pneumococcal, influenza, and hepatitis b, and COVID-19 vaccines and their administration.
(3) Federally qualified health center services.
(5) Screening mammography services as described in § 410.34 (c) and (d).
(6) Screening pelvic examinations as described in § 410.56.
(7) Beginning January 1, 2007, colorectal cancer screening tests as described in § 410.37.
(8) Beginning January 1, 2011, for a surgical service, and beginning January 1, 2015, for an anesthesia service, furnished in connection with, as a result of, and in the same clinical encounter as a planned colorectal cancer screening test. A surgical or anesthesia service furnished in connection with, as a result of, and in the same clinical encounter as a colorectal cancer screening test means - a surgical or anesthesia service furnished on the same date as a planned colorectal cancer screening test as described in § 410.37.
(10) Bone mass measurement.
(11) Medical nutrition therapy (MNT) services.
(12) Annual Wellness Visit (AWV), providing Personalized Prevention Plan Services (PPPS).
(13) Additional preventive services identified for coverage through the national coverage determination (NCD) process.
(c) Application of the Part B annual deductible.
(2) The Part B annual deductible is applied to incurred expenses in the order in which claims for those expenses are processed by the Medicare program.
(3) Only one Part B annual deductible may be imposed for any calendar year and it may be met by any combination of expenses incurred in that year.
(d) Special rule for services reimbursable on a formula basis.
(1) In applying the formula that takes into account reasonable costs, customary charges, and customary (insofar as reasonable) charges, and is used to determine payment for services furnished by a provider that is not a nominal charge provider, the Medicare intermediary takes the following steps:
(i) Reduces the customary charges for the services by an amount equal to any unmet portion of the deductible for the calendar year, in accordance with paragraph (b) of this section. (The amount of this reduction is considered to be the amount of the deductible that is met on the basis of the services to which it is applied.)
(ii) Determines 20 percent of any remaining portion of the customary (insofar as reasonable) charge.
(iii) Determines the lesser of the reasonable cost of the services and the customary charges for the services.
(iv) Reduces the amount determined under paragraph (c)(1)(iii) of this section by the sum of the reduction made under paragraph (c)(1)(i) of this section and the amount determined under parargaph (c)(1)(ii) of this section.
(v) Reduces the reasonable cost of the services by the amount of the reduction made under paragraph (c)(1)(i) of this section and multiplies the result by 80 percent.
(2) In accordance with § 410.152(b)(1), the amount payable is the amount determined under paragraph (c)(1)(iv) of this section, or the amount determined under paragraph (c)(1)(v) of this section, whichever is less.
(e) Special rule for services of an independent rural health clinic. Application of the Part B annual deductible to rural health clinic services is in accordance with § 405.2425(b)(2) of this chapter.
(f) Amount of the Part B annual deductible.
(1) Beginning with expenses for services furnished during calendar year 2006, and for all succeeding years, the annual deductible is the previous year's deductible plus the annual percentage increase in the monthly actuarial rate for Medicare enrollees age 65 and over, rounded to the nearest dollar.
(2) For 2005, the deductible is $110.
(3) From 1991 through 2004, the deductible was $100.
(4) From 1982 through 1990, the deductible was $75.
(5) From 1973 through 1981, the deductible was $60.
(6) From 1966 through 1972, the deductible was $50.
(g) Carryover of Part B annual deductible. For calendar years before 1982, the Part B annual deductible was reduced by the amount of expenses incurred during the last quarter of the preceding year that was applied to meet the deductible for that preceding year. Example: If $20 of expenses incurred in November 1980 was used to meet the 1980 deductible, the 1981 deductible was reduced to $40 ($60-$20).
(h) Examples of application of the annual deductible.
(1) Mr. A submitted claims for the following expenses incurred during 1982: $20 for services furnished in March by physician X; $30 for services furnished in April by physician Y; $50 for services furnished in June by physician Z, for a total of $100. The carrier determined that the charges as submitted were the reasonable charges. The first $75 of expenses for which claims were processed is applied to meet the $75 deductible for that year. Medicare Part B pays 80 percent of the remaining $25, or $20.
(2) Mr. B submitted a claim that included a $25 charge by a doctor for an examination to prescribe a hearing aid and an $80 charge for office surgery. This was the first claim relating to Mr. B's medical expenses processed in the calendar year. The carrier disallowed the $25 charge because the type of examination is not covered by Medicare. The carrier reduced the $80 surgery charge to a reasonable charge of $40. Only the $40 reasonable charge for covered services will count toward meeting Mr. B's deductible. Since the remainder of the surgery charge constitutes and excess over the reasonable charge, it cannot be applied to satisfy Mr. B's deductible.
(3) Mr. C became entitled to Medicare Part B benefits on July 1, 1982. He incurred expenses of $200 in July, August, and September. The carrier determined that the changes as submitted were reasonable. Even though Mr. C was entitled to benefits for only half the year, he must meet the full $75 deductible. Thus, $75 of this expense constitutes Mr. C's deductible. Medicare would pay $100, which is 80 percent of the remaining $125.