delivered the opinion of the Court.

The question is whether the Court of Claims has jurisdiction to review determinations by private insurance carriers of the amount of benefits payable under Part B of the Medicare statute.

I

Part B of the Medicare program, 79 Stat. 301, as amended, 42 U. S. C. § 1395j et seq. (1976 ed. and Supp. IV), is a federally subsidized, voluntary health insurance system for persons who are 65 or older or who are disabled. The companion Part A Medicare program covers institutional health costs such as hospital expenses. Part B supplements Part A’s coverage by insuring against a portion of some medical expenses, such as certain physician services and X-rays, that are excluded from the Part A program. Eligible individuals pay monthly premiums if they choose to enroll in Part B. These premiums, together with contributions from the Fed[*203] eral Government, are deposited in the Federal Supplementary Medical Insurance Trust Fund that finances the Part B program. See §§ 1395j, 1395r, 1395s, 1395t, and 1395w (1976 ed. and Supp. IV).

The Secretary of Health and Human Services administers the Medicare program. “In order to provide for the administration of the benefits . . . with maximum efficiency and convenience for individuals entitled to benefits,” the Secretary is authorized to assign the task of paying Part B claims from the Trust Fund to private insurance carriers experienced in such matters. ^[1] § 1395u. See H. R. Rep. No. 213, 89th Cong., 1st Sess., 46 (1965); S. Rep. No. 404, 89th Cong., 1st Sess., 53 (1965). After Part B enrollees receive medical care, they (or, after their assignment, their medical providers) bill the private insurance carrier.

If the carrier determines that a claim meets all Part B coverage criteria such as medical necessity and reasonable cost, the carrier pays the claim out of the federal funds. See 42 U. S. C. § 1395u; Schweiker v. McClure, ante, p. 188. If the carrier decides that reimbursement in full is not warranted, the statute and the regulations designate an appeal procedure available to dissatisfied claimants. All may request a “review determination,” which is a de novo written review hearing before a carrier employee different from the one who initially decided the claim. Claimants who remain dissatisfied and whose appeal involves more than $100 then may petition for an oral hearing before a hearing officer designated by the carrier. See 42 U. S. C. § 1395u(b)(3)(C); 42 CFR § 405.820 (1980). Unless the carrier or the hearing officer decides to reopen the proceeding, the hearing officer’s decision is “final and binding upon all parties to the hearing . . . .” § 405.835. Neither the statute nor the Secretary’s regulations make further provision for review of hearing officer decisions.

[*204] II

Respondent, a major distributor of kidney dialysis supplies, sold its products to institutions and individuals. About half of such sales were covered by the Part B program. Persons purchasing dialysis supplies assigned their Medicare Part B claims to respondent. See 42 U. S. C. § 426(e); § 426-1 (1976 ed., Supp. IV) (establishing Part B coverage for renal disease). Respondent in turn billed the Prudential Insurance Company of America, the private insurance carrier for the New Jersey area in which it is based. According to its contract with the Secretary, Prudential was required to reimburse 80% of what it determined to be a “reasonable charg[e]” for these supplies. See § 1395l(a) (1976 ed., Supp. IV).

Prudential interpreted the relevant statute and regulations to define the “reasonable charges” for respondent’s products to be their catalog price as of July 1 of the preceding calendar year. ^[2] For example, Prudential reimbursed respondent’s Part B invoices from July 1, 1975, to June 30, 1976, on the basis of prices contained in respondent’s July 1,1974, catalog.

Prudential began reimbursing respondent on this basis in 1974. Early in 1976 the respondent learned about the grounds for Prudential’s partial reimbursement of its in[*205] voices. At that time it requested Prudential to adjust past and future reimbursements to reflect price increases effective after July 1, 1974. Prudential agreed to adjust prospectively the basis for payment for the drug heparin, the price of which apparently had increased sharply. Cf. U. S. Dept. of HEW, Medicare Part B Carriers Manual § 5010.2 (1980) (permitting adjustments to customary charges in “highly unusual situations where equity clearly indicates that the increases are warranted”)- But the carrier refused to make either retroactive adjustments for heparin or any adjustments at all for other products. ^[3]

Respondent sought review of this refusal before one of Prudential’s hearing officers pursuant to 42 U. S. C. § 1395 u(b)(3)(C). The hearing officer affirmed Prudential’s decision. Respondent then brought the instant action against the United States in the Court of Claims seeking reimbursement on the basis of its current charges, asserting that Prudential’s refusal to set “reasonable charges” on the basis of respondent’s interim price increases contravened the Fifth Amendment as well as the Social Security Act and applicable regulations. The Court of Claims ruled that respondent’s suit was within the jurisdictional grant of the Tucker Act, 28 U. S. C. § 1491, which permits the Court of Claims to hear “any claim against the United States founded either upon the Constitution, or any Act of Congress, or any regulation of an executive department.” 225 Ct. Cl. 252, 256-262, 634 F. 2d 580, 584-588 (1980) (en banc), opinion clarified, 225 Ct. Cl. 273, 647 F. 2d 129 (1981). ^[4] On the merits, the court decided that Prudential’s calculation of re[*206] spondent’s maximum allowable charge erred in several respects. 225 Ct. Cl., at 262-268, 634 F. 2d, at 588-590. The court remanded the case to Prudential for redetermination of these matters. ^[5] We granted certiorari to determine whether the Court of Claims has jurisdiction over suits of this kind. 451 U. S. 982 (1981). We now reverse.

H — I H — I H-t

The United States argues that Congress, by enacting the Medicare statute, 42 U. S. C. § 1395j et seq. (1976 ed. and Supp. IV), specifically precluded review in the Court of Claims of adverse hearing officer determinations of the amount of Part B payments. We agree. ^[6]

Our lodestar is the language of the statute. Congress has specified in the Medicare statute that disputed carrier Part B determinations are to be subject to review in “a fair hearing[*207] by the carrier, in any case where the amount in controversy is $100 or more . . . 42 U. S. C. § 1395u(b)(3)(C) (emphasis added). ^[7] See Schweiker v. McClure, ante, p. 188. Congress also provided explicitly for review by the Secretary of “determination[s] of whether an individual is entitled to benefits under part A or part B, and [of] the determination of the amount of benefits under part A § 1395ff(a) (emphasis added). Individuals dissatisfied with the Secretary’s decision on such matters are granted the right to additional administrative review, ^[8] together with a further option of judicial review, ^[9] in two instances only: when the dispute relates to their eligibility to participate in either Part A or Part B, and when the dispute concerns the amount of benefits to which they are entitled under Part A. § 1395ff(b). ^[10]

[*208] Section 1395ff thus distinguishes between two types of administrative decisions: eligibility determinations (that decide whether an individual is 65 or over or “disabled” within the meaning of the Medicare program) and amount determinations (that decide the amount of the Medicare payment to be made on a particular claim). Conspicuously, the statute fails to authorize further review for determinations of the amount of Part B awards. In the context of the statute’s precisely drawn provisions, this omission provides persuasive evidence that Congress deliberately intended to foreclose further review of such claims. See, e. g., Lehman v. Nakshian, 453 U. S. 156, 162-163 (1981); Fedorenko v. United States, 449 U. S. 490, 512-513 (1981).

IV

The legislative history confirms this view and explains its logic. The Committee Reports accompanying the original enactment of the Medicare program stated that the supplemental payments under the Part B program generally were expected to be smaller than those under the primary Part A program. Apparently, it was for this reason that the proposed bill did not provide for judicial review of “a determination concerning the amount of benefits under [P]art B . . . .” S. Rep. No. 404, 89th Cong., 1st Sess., 55 (1965). ^[11]

[*209] This intent to limit the review of the generally smaller Part B awards was reiterated when Congress amended § 1395ff(b) in 1972. ^[12] When introducing this amendment, Senator Bennett stated that it was intended to clarify the intent of existing law, which “greatly restricted” the appealability of Medicare decisions “in order to avoid overloading the courts with quite minor matters.” 118 Cong. Rec. 33992 (1972). The Senator explained that the amendment would assure that judicial review would be available as to questions of “eligibility[*210] to any benefits of medicare but not [as] to decisions on a claim for payment for a given service.” ^[13] Ibid.

The Conference Committee advanced an identical explanation for this amendment:

“CLARIFICATION OF MEDICARE APPEAL PROCEDURES

“Amendment No. 561: The Senate amendment added a new section to the House bill which would make clear that there is no authorization for an appeal to the Secretary or for judicial review on matters solely involving amounts of benefits under Part B, and that insofar as Part A amounts are concerned, appeal is authorized only if the amount in controversy is $100 or more and judicial review only if the amount in controversy is $1,000 or more.

“The House recedes.” H. R. Conf. Rep. No. 92-1605, p. 61 (1972).

[*211] These expressions of legislative intent unambiguously support our reading of the statutory language. Respondent advances no persuasive evidence of contrary congressional will. In such circumstances, our task is at an end. ^[14]

The judgment of the Court of Claims is reversed.

So ordered.