---
kind: "section"
citation: "42 U.S.C. § 1395m–1"
title: "42"
title_heading: "The Public Health and Welfare"
number: "1395m–1"
heading: "Improving policies for clinical diagnostic laboratory tests"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/42/1395m-1"
units:
  - "Chapter 7 — Social Security"
  - "Subchapter XVIII — Health Insurance for Aged and Disabled"
  - "Part B — Supplementary Medical Insurance Benefits for Aged and Disabled"
---

# §1395m–1. Improving policies for clinical diagnostic laboratory tests

- (a) **Reporting of private sector payment rates for establishment of medicare payment rates—**
  - (1) **In general—**
    - (A) **General reporting requirements—** Subject to [subparagraph (B)](#a-1-B), beginning January 1, 2016, and every 3 years thereafter (or, annually, in the case of reporting with respect to an advanced diagnostic laboratory test, as defined in [subsection (d)(5)](#d-5)), an applicable laboratory (as defined in [paragraph (2)](#a-2)) shall report to the [Secretary](/usc/42/1301.md?p=a-6), at a time specified by the [Secretary](/usc/42/1301.md?p=a-6) (referred to in this subsection as the “reporting period”), applicable information (as defined in [paragraph (3)](#a-3)) for a data collection period (as defined in [paragraph (4)](#a-4)) for each clinical diagnostic laboratory test that the laboratory furnishes during such period for which payment is made under this part.
    - (B) **Revised reporting period—** In the case of reporting with respect to clinical diagnostic laboratory tests that are not advanced diagnostic laboratory tests, the [Secretary](/usc/42/1301.md?p=a-6) shall revise the reporting period under [subparagraph (A)](#a-1-A) such that—
      - (i) no reporting is required during the period beginning January 1, 2020, and ending April 30, 2026;
      - (ii) reporting is required during the period beginning May 1, 2026, and ending July 31, 2026; and
      - (iii) reporting is required every three years after the period described in [clause (ii)](#a-1-B-ii).
  - (2) **Definition of applicable laboratory—** In this section, the term “applicable laboratory” means a laboratory that, with respect to its revenues under this subchapter, a majority of such revenues are from this section, [section 1395l(h)](/usc/42/1395l.md?p=h) of this title, or [section 1395w–4 of this title](/usc/42/1395w–4.md). The [Secretary](/usc/42/1301.md?p=a-6) may establish a low volume or low expenditure threshold for excluding a laboratory from the definition of applicable laboratory under this paragraph, as the [Secretary](/usc/42/1301.md?p=a-6) determines appropriate.
  - (3) **Applicable information defined—**
    - (A) **In general—** In this section, subject to [subparagraph (B)](#a-3-B), the term “applicable information” means, with respect to a laboratory test for a data collection period, the following:
      - (i) The payment rate (as determined in accordance with [paragraph (5)](#a-5)) that was paid by each private payor for the test during the period.
      - (ii) The volume of such tests for each such payor for the period.
    - (B) **Exception for certain contractual arrangements—** Such term shall not include information with respect to a laboratory test for which payment is made on a capitated basis or other similar payment basis during the data collection period.
  - (4) **Data collection period defined—**
    - (A) **In general—** Subject to [subparagraph (B)](#a-4-B), in this section, the term “data collection period” means a period of time, such as a previous 12 month period, specified by the [Secretary](/usc/42/1301.md?p=a-6).
    - (B) **Exception—** In the case of the reporting period described in [paragraph (1)(B)(ii)](#a-1-B-ii) with respect to clinical diagnostic laboratory tests that are not advanced diagnostic laboratory tests, the term “data collection period” means the period beginning January 1, 2025, and ending June 30, 2025.
  - (5) **Treatment of discounts—** The payment rate reported by a laboratory under this subsection shall reflect all discounts, rebates, coupons, and other price concessions, [including](/usc/42/1301.md?p=b) those described in [section 1395w–3a(c)(3) of this title](/usc/42/1395w–3a.md?p=c-3).
  - (6) **Ensuring complete reporting—** In the case where an applicable laboratory has more than one payment rate for the same payor for the same test or more than one payment rate for different payors for the same test, the applicable laboratory shall report each such payment rate and the volume for the test at each such rate under this subsection. Beginning with January 1, 2019, the [Secretary](/usc/42/1301.md?p=a-6) may establish rules to aggregate reporting with respect to the situations described in the preceding sentence.
  - (7) **Certification—** An officer of the laboratory shall certify the accuracy and completeness of the information reported under this subsection.
  - (8) **Private payor defined—** In this section, the term “private payor” means the following:
    - (A) A health insurance issuer and a [group health plan](/usc/42/1397jj.md?p=c-3) (as such terms are defined in [section 300gg–91 of this title](/usc/42/300gg–91.md)).
    - (B) A Medicare Advantage plan under part C.
    - (C) A medicaid managed care organization (as defined in [section 1396b(m) of this title](/usc/42/1396b.md?p=m)).
  - (9) **Civil money penalty—**
    - (A) **In general—** If the [Secretary](/usc/42/1301.md?p=a-6) determines that an applicable laboratory has failed to report or made a misrepresentation or omission in reporting information under this subsection with respect to a clinical diagnostic laboratory test, the [Secretary](/usc/42/1301.md?p=a-6) may apply a civil money penalty in an amount of up to $10,000 per day for each failure to report or each such misrepresentation or omission.
    - (B) **Application—** The provisions of [section 1320a–7a of this title](/usc/42/1320a–7a.md) (other than subsections [(a)](#a) and [(b)](#b)) shall apply to a civil money penalty under this paragraph in the same manner as they apply to a civil money penalty or proceeding under [section 1320a–7a(a) of this title](/usc/42/1320a–7a.md?p=a).
  - (10) **Confidentiality of information—** Notwithstanding any other provision of law, information disclosed by a laboratory under this subsection is confidential and shall not be disclosed by the [Secretary](/usc/42/1301.md?p=a-6) or a Medicare contractor in a form that discloses the identity of a specific payor or laboratory, or prices charged or payments made to any such laboratory, except—
    - (A) as the [Secretary](/usc/42/1301.md?p=a-6) determines to be necessary to carry out this section;
    - (B) to permit the Comptroller General to review the information provided;
    - (C) to permit the [Director](/usc/42/11851.md?p=5) of the Congressional Budget Office to review the information provided; and
    - (D) to permit the Medicare Payment Advisory Commission to review the information provided.
  - (11) **Protection from public disclosure—** A payor shall not be identified on information reported under this subsection. The name of an applicable laboratory under this subsection shall be exempt from disclosure under [section 552(b)(3) of title 5](/usc/5/552.md?p=b-3).
  - (12) **Regulations—** Not later than June 30, 2015, the [Secretary](/usc/42/1301.md?p=a-6) shall establish through notice and comment rulemaking parameters for data collection under this subsection.
- (b) **Payment for clinical diagnostic laboratory tests—**
  - (1) **Use of private payor rate information to determine medicare payment rates—**
    - (A) **In general—** Subject to [paragraph (3)](#b-3) and subsections [(c)](#c) and [(d)](#d), in the case of a clinical diagnostic laboratory test furnished on or after January 1, 2017, the payment amount under this section shall be equal to the weighted median determined for the test under [paragraph (2)](#b-2) for the most recent data collection period.
    - (B) **Application of payment amounts to hospital laboratories—** The payment amounts established under this section shall apply to a clinical diagnostic laboratory test furnished by a [hospital](/usc/42/300s–3.md?p=1) laboratory if such test is paid for separately, and not as part of a bundled payment under [section 1395l(t)](/usc/42/1395l.md?p=t) of this title.
  - (2) **Calculation of weighted median—** For each laboratory test with respect to which information is reported under [subsection (a)](#a) for a data collection period, the [Secretary](/usc/42/1301.md?p=a-6) shall calculate a weighted median for the test for the period, by arraying the distribution of all payment rates reported for the period for each test weighted by volume for each payor and each laboratory.
  - (3) **Phase-in of reductions from private payor rate implementation—**
    - (A) **In general—** Payment amounts determined under this subsection for a clinical diagnostic laboratory test for each of 2017 through 2029 shall not result in a reduction in payments for a clinical diagnostic laboratory test for the year of greater than the applicable percent (as defined in [subparagraph (B)](#b-3-B)) of the amount of payment for the test for the preceding year.
    - (B) **Applicable percent defined—** In this paragraph, the term “applicable percent” means—
      - (i) for each of 2017 through 2020, 10 percent;
      - (ii) for each of 2021 through 2026, 0 percent; and
      - (iii) for each of 2027 through 2029, 15 percent.
    - (C) **No application to new tests—** This paragraph shall not apply to payment amounts determined under this section for either of the following.
      - (i) A new test under [subsection (c)](#c).
      - (ii) A new advanced diagnostic test[^1] (as defined in [subsection (d)(5)](#d-5)) under [subsection (d)](#d).
  - (4) **Application of market rates—**
    - (A) **In general—** Subject to [paragraph (3)](#b-3), once established for a year following a data collection period, the payment amounts under this subsection shall continue to apply until the year following the next data collection period.
    - (B) **Other adjustments not applicable—** The payment amounts under this section shall not be subject to any adjustment ([including](/usc/42/1301.md?p=b) any geographic adjustment, budget neutrality adjustment, annual update, or other adjustment).
  - (5) **Sample collection fee—** In the case of a sample collected from an individual in a skilled [nursing facility](/usc/42/1397j.md?p=17-A) or by a laboratory on behalf of a home health [agency](/usc/42/1397n–12.md?p=1), the nominal fee that would otherwise apply under [section 1395l(h)(3)(A)](/usc/42/1395l.md) of this title shall be increased by $2.
- (c) **Payment for new tests that are not advanced diagnostic laboratory tests—**
  - (1) **Payment during initial period—** In the case of a clinical diagnostic laboratory test that is assigned a new or substantially revised HCPCS code on or after April 1, 2014, and which is not an advanced diagnostic laboratory test (as defined in [subsection (d)(5)](#d-5)), during an initial period until payment rates under [subsection (b)](#b) are established for the test, payment for the test shall be determined—
    - (A) using cross-walking (as described in section 414.508(a) of title 42, Code of Federal Regulations, or any successor regulation) to the most appropriate existing test under the fee schedule under this section during that period; or
    - (B) if no existing test is comparable to the new test, according to the gapfilling process described in [paragraph (2)](#c-2).
  - (2) **Gapfilling process described—** The gapfilling process described in this paragraph shall take into account the following sources of information to determine gapfill amounts, if available:
    - (A) Charges for the test and routine discounts to charges.
    - (B) Resources required to perform the test.
    - (C) Payment amounts determined by other payors.
    - (D) Charges, payment amounts, and resources required for other tests that may be comparable or otherwise relevant.
    - (E) Other criteria the [Secretary](/usc/42/1301.md?p=a-6) determines appropriate.
  - (3) **Additional consideration—** In determining the payment amount under crosswalking or gapfilling processes under this subsection, the [Secretary](/usc/42/1301.md?p=a-6) shall consider recommendations from the panel established under [subsection (f)(1)](#f-1).
  - (4) **Explanation of payment rates—** In the case of a clinical diagnostic laboratory test for which payment is made under this subsection, the [Secretary](/usc/42/1301.md?p=a-6) shall make available to the public an explanation of the payment rate for the test, [including](/usc/42/1301.md?p=b) an explanation of how the criteria described in [paragraph (2)](#c-2) and [paragraph (3)](#c-3) are applied.
- (d) **Payment for new advanced diagnostic laboratory tests—**
  - (1) **Payment during initial period—**
    - (A) **In general—** In the case of an advanced diagnostic laboratory test for which payment has not been made under the fee schedule under [section 1395l(h)](/usc/42/1395l.md?p=h) of this title prior to April 1, 2014, during an initial period of three quarters, the payment amount for the test for such period shall be based on the actual list charge for the laboratory test.
    - (B) **Actual list charge—** For purposes of [subparagraph (A)](#d-1-A), the term “actual list charge”, with respect to a laboratory test furnished during such period, means the publicly available rate on the first day at which the test is available for purchase by a private payor.
  - (2) **Special rule for timing of initial reporting—** With respect to an advanced diagnostic laboratory test described in [paragraph (1)(A)](#d-1-A), an applicable laboratory shall initially be required to report under [subsection (a)](#a) not later than the last day of the second quarter of the initial period under such paragraph.
  - (3) **Application of market rates after initial period—** Subject to [paragraph (4)](#d-4), data reported under [paragraph (2)](#d-2) shall be used to establish the payment amount for an advanced diagnostic laboratory test after the initial period under [paragraph (1)(A)](#d-1-A) using the methodology described in [subsection (b)](#b). Such payment amount shall continue to apply until the year following the next data collection period.
  - (4) **Recoupment if actual list charge exceeds market rate—** With respect to the initial period described in [paragraph (1)(A)](#d-1-A), if, after such period, the [Secretary](/usc/42/1301.md?p=a-6) determines that the payment amount for an advanced diagnostic laboratory test under [paragraph (1)(A)](#d-1-A) that was applicable during the period was greater than 130 percent of the payment amount for the test established using the methodology described in [subsection (b)](#b) that is applicable after such period, the [Secretary](/usc/42/1301.md?p=a-6) shall recoup the difference between such payment amounts for tests furnished during such period.
  - (5) **Advanced diagnostic laboratory test defined—** In this subsection, the term “advanced diagnostic laboratory test” means a clinical diagnostic laboratory test covered under this part that is offered and furnished only by a single laboratory and not sold for use by a laboratory other than the original developing laboratory (or a successor [owner](/usc/42/13641.md?p=4)) and meets one of the following criteria:
    - (A) The test is an analysis of multiple biomarkers of DNA, RNA, or proteins combined with a unique algorithm to yield a single patient-specific result.
    - (B) The test is cleared or approved by the Food and [Drug](/usc/42/11851.md?p=4) [Administration](/usc/42/1301.md?p=a-10).
    - (C) The test meets other similar criteria established by the [Secretary](/usc/42/1301.md?p=a-6).
- (e) **Coding—**
  - (1) **Temporary codes for certain new tests—**
    - (A) **In general—** The [Secretary](/usc/42/1301.md?p=a-6) shall adopt temporary HCPCS codes to identify new advanced diagnostic laboratory tests (as defined in [subsection (d)(5)](#d-5)) and new laboratory tests that are cleared or approved by the Food and [Drug](/usc/42/11851.md?p=4) [Administration](/usc/42/1301.md?p=a-10).
    - (B) **Duration—**
      - (i) **In general—** Subject to [clause (ii)](#e-1-B-ii), the temporary code shall be effective until a permanent HCPCS code is established (but not to exceed 2 years).
      - (ii) **Exception—** The [Secretary](/usc/42/1301.md?p=a-6) may extend the temporary code or establish a permanent HCPCS code, as the [Secretary](/usc/42/1301.md?p=a-6) determines appropriate.
  - (2) **Existing tests—** Not later than January 1, 2016, for each existing advanced diagnostic laboratory test (as so defined) and each existing clinical diagnostic laboratory test that is cleared or approved by the Food and [Drug](/usc/42/11851.md?p=4) [Administration](/usc/42/1301.md?p=a-10) for which payment is made under this part as of April 1, 2014, if such test has not already been assigned a unique HCPCS code, the [Secretary](/usc/42/1301.md?p=a-6) shall—
    - (A) assign a unique HCPCS code for the test; and
    - (B) publicly report the payment rate for the test.
  - (3) **Establishment of unique identifier for certain tests—** For purposes of tracking and monitoring, if a laboratory or a manufacturer requests a unique identifier for an advanced diagnostic laboratory test (as so defined) or a laboratory test that is cleared or approved by the Food and [Drug](/usc/42/11851.md?p=4) [Administration](/usc/42/1301.md?p=a-10), the [Secretary](/usc/42/1301.md?p=a-6) shall utilize a means to uniquely track such test through a mechanism such as a HCPCS code or modifier.
- (f) **Input from clinicians and technical experts—**
  - (1) **In general—** The [Secretary](/usc/42/1301.md?p=a-6) shall consult with an expert outside advisory panel, established by the [Secretary](/usc/42/1301.md?p=a-6) not later than July 1, 2015, composed of an appropriate selection of individuals with expertise, which may include molecular pathologists, researchers, and individuals with expertise in laboratory science or health economics, in issues related to clinical diagnostic laboratory tests, which may include the development, validation, performance, and application of such tests, to provide—
    - (A) input on—
      - (i) the establishment of payment rates under this section for new clinical diagnostic laboratory tests, [including](/usc/42/1301.md?p=b) whether to use crosswalking or gapfilling processes to determine payment for a specific new test; and
      - (ii) the factors used in determining coverage and payment processes for new clinical diagnostic laboratory tests; and
    - (B) recommendations to the [Secretary](/usc/42/1301.md?p=a-6) under this section.
  - (2) **Compliance with chapter 10 of title 5—** The panel shall be subject to chapter 10 of title 5.
  - (3) **Continuation of annual meeting—** The [Secretary](/usc/42/1301.md?p=a-6) shall continue to convene the annual meeting described in [section 1395l(h)(8)(B)(iii)](/usc/42/1395l.md?p=h-8-B-iii) of this title after the implementation of this section for purposes of receiving comments and recommendations (and data on which the recommendations are based) as described in such section on the establishment of payment amounts under this section.
- (g) **Coverage—**
  - (1) **Issuance of coverage policies—**
    - (A) **In general—** A medicare administrative contractor shall only issue a coverage policy with respect to a clinical diagnostic laboratory test in accordance with the process for making a local coverage determination (as defined in [section 1395ff(f)(2)(B) of this title](/usc/42/1395ff.md?p=f-2-B)), [including](/usc/42/1301.md?p=b) the appeals and review process for local coverage determinations under part [426](/usc/42/426.md) of title 42, Code of Federal Regulations (or successor regulations).
    - (B) **No effect on national coverage determination process—** This paragraph shall not apply to the national coverage determination process (as defined in [section 1395ff(f)(1)(B) of this title](/usc/42/1395ff.md?p=f-1-B)).
    - (C) **Effective date—** This paragraph shall apply to coverage policies issued on or after January 1, 2015.
  - (2) **Designation of one or more medicare administrative contractors for clinical diagnostic laboratory tests—** The [Secretary](/usc/42/1301.md?p=a-6) may designate one or more (not to exceed 4) medicare administrative contractors to either establish coverage policies or establish coverage policies and process claims for payment for clinical diagnostic laboratory tests, as determined appropriate by the [Secretary](/usc/42/1301.md?p=a-6).
- (h) **Implementation—**
  - (1) **Implementation—** There shall be no administrative or judicial review under [section 1395ff of this title](/usc/42/1395ff.md), [section 1395oo](/usc/42/1395oo.md) of this title, or otherwise, of the establishment of payment amounts under this section.
  - (2) **Administration—** [Chapter 35](/usc/44/chch35.md) of title 44 shall not apply to information collected under this section.
  - (3) **Funding—** For purposes of implementing this section, the [Secretary](/usc/42/1301.md?p=a-6) shall provide for the transfer, from the Federal Supplementary Medical Insurance Trust Fund under [section 1395t of this title](/usc/42/1395t.md), to the Centers for Medicare & Medicaid Services Program Management Account, for each of [fiscal years](/usc/42/619.md?p=3) 2014 through 2018, $4,000,000, and for each of [fiscal years](/usc/42/619.md?p=3) 2019 through 2023, $3,000,000. Amounts transferred under the preceding sentence shall remain available until expended.
- (i) **Transitional rule—** During the period beginning on April 1, 2014, and ending on December 31, 2016, with respect to advanced diagnostic laboratory tests under this part, the [Secretary](/usc/42/1301.md?p=a-6) shall use the methodologies for pricing, coding, and coverage in effect on the day before April 1, 2014, which may include cross-walking or gapfilling methods.

## Footnotes

[^1]: So in original. Probably should be preceded by “laboratory”.

## Source credit

(Aug. 14, 1935, ch. 531, title XVIII, § 1834A, as added Pub. L. 113–93, title II, § 216(a), Apr. 1, 2014, 128 Stat. 1053; amended Pub. L. 116–94, div. N, title I, § 105(a), Dec. 20, 2019, 133 Stat. 3100; Pub. L. 116–136, div. A, title III, § 3718, Mar. 27, 2020, 134 Stat. 425; Pub. L. 117–71, § 4, Dec. 10, 2021, 135 Stat. 1507; Pub. L. 117–286, § 4(a)(251), Dec. 27, 2022, 136 Stat. 4333; Pub. L. 117–328, div. FF, title IV, § 4114, Dec. 29, 2022, 136 Stat. 5901; Pub. L. 118–22, div. B, title II, § 502, Nov. 17, 2023, 137 Stat. 123; Pub. L. 118–83, div. B, title II, § 221, Sept. 26, 2024, 138 Stat. 1538; Pub. L. 119–37, div. F, title II, § 6209, Nov. 12, 2025, 139 Stat. 633; Pub. L. 119–75, div. J, title II, § 6226(a)–(c), Feb. 3, 2026, 140 Stat. 684.)

## Notes

### Editorial Notes

### Amendments

2026—Subsec. (a)(1)(B)(i). Pub. L. 119–75, § 6226(c)(1), substituted “April 30” for “January 31”.

Subsec. (a)(1)(B)(ii). Pub. L. 119–75, § 6226(c)(2), substituted “May 1, 2026, and ending July 31, 2026” for “February 1, 2026, and ending April 30, 2026”.

Subsec. (a)(4)(B). Pub. L. 119–75, § 6226(b), substituted “2025” for “2019” in two places.

Subsec. (b)(3)(A). Pub. L. 119–75, § 6226(a)(1), substituted “2029” for “2028”.

Subsec. (b)(3)(B)(ii). Pub. L. 119–75, § 6226(a)(2)(A), substituted “2026” for “2025 and for the period beginning on January 1, 2026, and ending on January 30, 2026”.

Subsec. (b)(3)(B)(iii). Pub. L. 119–75, § 6226(a)(2)(B), substituted “each of 2027 through 2029” for “the period beginning on January 31, 2026, and ending on December 31, 2026, and for each of 2027 and 2028”.

2025—Subsec. (a)(1)(B)(i). Pub. L. 119–37, § 6209(b)(1), substituted “January 31, 2026” for “December 31, 2025”.

Subsec. (a)(1)(B)(ii). Pub. L. 119–37, § 6209(b)(2), substituted “February 1, 2026, and ending April 30, 2026” for “January 1, 2026, and ending March 31, 2026”.

Subsec. (b)(3)(B)(ii). Pub. L. 119–37, § 6209(a)(1), inserted “and for the period beginning on January 1, 2026, and ending on January 30, 2026” after “2025”.

Subsec. (b)(3)(B)(iii). Pub. L. 119–37, § 6209(a)(2), substituted “for the period beginning on January 31, 2026, and ending on December 31, 2026, and for each of 2027 and 2028” for “for each of 2026 through 2028”.

2024—Subsec. (a)(1)(B)(i). Pub. L. 118–83, § 221(b)(1), substituted “2025” for “2024”.

Subsec. (a)(1)(B)(ii). Pub. L. 118–83, § 221(b)(2), substituted “2026” for “2025” in two places.

Subsec. (b)(3)(A). Pub. L. 118–83, § 221(a)(1), substituted “2028” for “2027”.

Subsec. (b)(3)(B)(ii). Pub. L. 118–83, § 221(a)(2)(A), substituted “2025” for “2024”.

Subsec. (b)(3)(B)(iii). Pub. L. 118–83, § 221(a)(2)(B), substituted “2026 through 2028” for “2025 through 2027”.

2023—Subsec. (a)(1)(B)(i). Pub. L. 118–22, § 502(b)(1), substituted “2024” for “2023”.

Subsec. (a)(1)(B)(ii). Pub. L. 118–22, § 502(b)(2), substituted “2025” for “2024” in two places.

Subsec. (b)(3)(A). Pub. L. 118–22, § 502(a)(1), substituted “2027” for “2026”.

Subsec. (b)(3)(B)(ii). Pub. L. 118–22, § 502(a)(2)(A), substituted “2024” for “2023”.

Subsec. (b)(3)(B)(iii). Pub. L. 118–22, § 502(a)(2)(B), substituted “2025 through 2027” for “2024 through 2026”.

2022—Subsec. (a)(1)(B)(i). Pub. L. 117–328, § 4114(b)(1), substituted “December 31, 2023” for “December 31, 2022”.

Subsec. (a)(1)(B)(ii). Pub. L. 117–328, § 4114(b)(2), substituted “January 1, 2024” for “January 1, 2023” and “March 31, 2024” for “March 31, 2023”.

Subsec. (b)(3)(A). Pub. L. 117–328, § 4114(a)(1), substituted “through 2026” for “through 2025”.

Subsec. (b)(3)(B)(ii). Pub. L. 117–328, § 4114(a)(2)(A), substituted “through 2023” for “and 2022”.

Subsec. (b)(3)(B)(iii). Pub. L. 117–328, § 4114(a)(2)(B), substituted “2024 through 2026” for “2023 through 2025”.

Subsec. (f)(2). Pub. L. 117–286 substituted “chapter 10 of title 5” for “FACA” in heading and “chapter 10 of title 5.” for “the Federal Advisory Committee Act (5 U.S.C. App.).” in text.

2021—Subsec. (a)(1)(B)(i). Pub. L. 117–71, § 4(b)(1), substituted “December 31, 2022” for “December 31, 2021”.

Subsec. (a)(1)(B)(ii). Pub. L. 117–71, § 4(b)(2), substituted “January 1, 2023” for “January 1, 2022” and “March 31, 2023” for “March 31, 2022”.

Subsec. (b)(3)(A). Pub. L. 117–71, § 4(a)(1), substituted “through 2025” for “through 2024”.

Subsec. (b)(3)(B)(ii). Pub. L. 117–71, § 4(a)(2)(A), substituted “for each of 2021 and 2022” for “for 2021”.

Subsec. (b)(3)(B)(iii). Pub. L. 117–71, § 4(a)(2)(B), substituted “2023 through 2025” for “2022 through 2024”.

2020—Subsec. (a)(1)(B)(i). Pub. L. 116–136, § 3718(a)(1), substituted “December 31, 2021” for “December 31, 2020”.

Subsec. (a)(1)(B)(ii). Pub. L. 116–136, § 3718(a)(2), substituted “January 1, 2022” for “January 1, 2021” and “March 31, 2022” for “March 31, 2021”.

Subsec. (b)(3)(A). Pub. L. 116–136, § 3718(b)(1), substituted “through 2024” for “through 2023”.

Subsec. (b)(3)(B). Pub. L. 116–136, § 3718(b)(2), added cl. (ii), redesignated former cl. (ii) as (iii), and substituted “2022 through 2024” for “2021 through 2023” in cl. (iii).

2019—Subsec. (a)(1). Pub. L. 116–94, § 105(a)(1)(A), designated existing provisions as subpar. (A) and inserted heading, substituted “Subject to subparagraph (B), beginning January 1, 2016” for “Beginning January 1, 2016”, inserted “(referred to in this subsection as the ‘reporting period’)” after “at a time specified by the Secretary”, and added subpar. (B).

Subsec. (a)(4). Pub. L. 116–94, § 105(a)(1)(B), designated existing provisions as subpar. (A) and inserted heading, substituted “Subject to subparagraph (B), in this section” for “In this section”, and added subpar. (B).

Subsec. (b)(3)(A). Pub. L. 116–94, § 105(a)(2)(A), substituted “through 2023” for “through 2022”.

Subsec. (b)(3)(B)(i). Pub. L. 116–94, § 105(a)(2)(B)(i), substituted “through 2020” for “through 2019”.

Subsec. (b)(3)(B)(ii). Pub. L. 116–94, § 105(a)(2)(B)(ii), substituted “2021 through 2023” for “2020 through 2022”.

### Statutory Notes and Related Subsidiaries

### Implementation of Amendment by Pub. L. 119–75

Pub. L. 119–75, div. J, title II, § 6226(d), Feb. 3, 2026, 140 Stat. 684, provided that: “Notwithstanding any other provision of law, the Secretary of Health and Human Services may implement the amendments made by this section [amending this section] by program instruction or otherwise.”

### Monitoring of Medicare Expenditures and Implementation of New Payment System for Laboratory Tests

Pub. L. 113–93, title II, § 216(c)(2), Apr. 1, 2014, 128 Stat. 1061, provided that: “The Inspector General of the Department of Health and Human Services shall— publicly release an annual analysis of the top 25 laboratory tests by expenditures under title XVIII of the Social Security Act [42 U.S.C. 1395 et seq.]; and conduct analyses the Inspector General determines appropriate with respect to the implementation and effect of the new payment system for laboratory tests under section 1834A of the Social Security Act [42 U.S.C. 1395m–1], as added by subsection (a).”