---
kind: "section"
citation: "42 C.F.R. § 401.303"
title: "42"
number: "401.303"
heading: "Definitions."
url: "https://uscodex.org/cfr/42/401.303"
---

# §401.303. Definitions.


For purposes of this subpart—

Medicare contractor means a Part A/Part B Medicare Administrative Contractor (A/B MAC) or a Durable Medical Equipment Medicare Administrative Contractor (DME MAC).

Overpayment means any funds that a person has received or retained under title XVIII of the Act to which the person, after applicable reconciliation, is not entitled under such title.

Person means a provider (as defined in [§ 400.202](/cfr/42/400.202.md) of this chapter) or a supplier (as defined in [§ 400.202](/cfr/42/400.202.md) of this chapter).


## Notes

### Source

Source: 81 FR 7683, Feb. 12, 2016, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 1302, 1395hh, 1395w-5, and 1395kk-2.