42 CFR 422.574 : Public Health (Part 1 To Parts 1009-1099) — (§ 414.1 To Parts 427-429) — Centers For Medicare & Medicaid Services, Department Of Health And Human Services (Continued) (§ 414.1 To Parts 427-429) — Medicare Program (Continued) (§ 414.1 To Parts 427-429) — Medicare Advantage Program (§ 422.1 To § 422.2615) — Grievances, Organization Determinations And Appeals (§ 422.560 To § 422.626) — Parties to the organization determination.

The parties to the organization determination are -

(a) The enrollee (including his or her representative);

(b) An assignee of the enrollee (that is, a physician or other provider who has furnished a service to the enrollee and formally agrees to waive any right to payment from the enrollee for that service);

(c) The legal representative of a deceased enrollee's estate; or

(d) Any other provider or entity (other than the MA organization) determined to have an appealable interest in the proceeding.