This educational guide is based on the linked primary sources. It is not a Court publication, is not affiliated with the Court, and is not legal advice.
In brief
Overview
According to John G. Roberts, petitioner argues that Illinois law providing an independent review of HMO benefit denials is preempted by ERISA.
According to Mr. Albers, respondent contends that Illinois section 4‑10 is not in conflict with ERISA and therefore is enforceable.
Background and question before the Court
The certificate of coverage is an agreement between the HMO and the employer that extends to particular employees the benefits that are set forth there.
Justice asked whether the plan was in the record.
According to Justice O'Connor, justice O’Connor asked whether a less‑expensive effective treatment would still be considered medically necessary.
Justice Souter asked about the traditional elements of arbitration, including review of evidence and opportunity to argue.
A Justice asked a follow‑up question about a difficult aspect of the case.
What each side argues
Petitioner (Rush Prudential HMO, Inc.)
According to John G. Roberts, eRISA’s civil enforcement provisions are the exclusive remedy, so the Illinois independent external review law is preempted.
Respondent (Deborah C. Moran)
According to Mr. Albers, illinois section 4‑10 does not conflict with ERISA and is enforceable to protect Illinois insureds.
According to Mr. Albers, the dispute is an arbitration that proceeds to a neutral third party.
According to Mr. Albers, the HMO Insurance Act is part of the Illinois Insurance Code and meets the factors the Court has set for what constitutes an insurer.
What happened at oral argument
According to Chief Justice Rehnquist, chief Justice Rehnquist announced the hearing of argument for Number 00‑1021, Rush Prudential HMO, Inc. v. Deborah C. Moran.
According to Justice O'Connor, justice O’Connor asked whether a less‑expensive effective treatment would still be medically necessary.
Justice Souter asked about the traditional elements of arbitration, including review of evidence and opportunity to argue.
According to Edwin S. Kneedler (United States, amicus curiae), an oral argument was presented on behalf of the United States.
What the Court decided
Why it matters
Terms to know
- certificate of coverage
- An agreement between the HMO and the employer that extends to particular employees the benefits that are set forth there.
Primary sources
Read the source materials on the official site or open the immutable repository copy used for this guide.
- 2d072997d14d1023f508-r1-c3221463d19964fa.pdforal argument transcript
Guide generated September 19, 2026. Automated validation accepted this version.