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Medicaid providers’ right to sue

Armstrong v. Exceptional Child Center

Updated Oct 18, 2026

In brief

The Supreme Court overturned the Ninth Circuit’s judgment and ruled that providers could not use this kind of federal-court suit to enforce Section 30(A).

Where it stands
Decided

Decided 5-4 · March 31, 2015 · Opinion by Justice Breyer

What it’s about
Idaho Medicaid providers challenged state reimbursement rates under federal law, raising whether the Supremacy Clause let them sue to enforce Medicaid requirements. The Supreme Court overturned the Ninth Circuit’s ruling.
Who it affects
The ruling bars these providers from using this particular federal-court route to require Idaho to follow Section 30(A).

Summary: written with AI from the case record.

Illustration for Richard Armstrong v. Exceptional Child Center, Inc.
Conceptual illustration · AI-generated

What it's about

Section 30(A) of the Medicaid Act was the federal provision at the center of the providers’ rate challenge.

Question presented

Does the Supremacy Clause give Medicaid providers a private right of action against a state when Congress chose not to create enforceable rights under the Medicaid Act?

What the Court decided

Holding

The judgment is reversed. 567 Fed. Appx. 496, reversed.

Result
Reversed

The vote

  • Joined the judgment
  • Dissented
  • Wrote an opinion
Majority · 5joined the Court's opinion
  1. Breyerwrote the opinion
  2. Thomas
  3. Scaliaalso wrote separately
  4. Roberts
  5. Alito
Dissenting · 4disagreed with the result
  1. Kagan
  2. Kennedy
  3. Ginsburg
  4. Sotomayorwrote the dissent
5 justices joined the judgment, 4 dissented.

From the opinions

“Nevertheless, today the Court holds that Congress has foreclosed private parties from invoking the equitable powers of the federal courts to require States to comply with §30(A) of the Medicaid Act, 42 U. S. C. §1396a(a)(30)(A).”

— Justice Sotomayor(dissent)

What's next

The Supreme Court has completed its review; no further court step is specified in the decision.

Documents

1

Docket activity

9
  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Case Briefing

    Oct 18, 2026 · Generated

  • New analysis added

    Oct 18, 2026 · Court records

  • AI analysis generated: Impact Analysis

    Oct 18, 2026 · Generated

  • AI analysis generated: Opinion Summary

    Oct 18, 2026 · Generated

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  • AI analysis generated: Decision Record

    Oct 18, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Oct 18, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Oct 17, 2026 · Court records

  • Opinion added: Armstrong

    Mar 31, 2015 · Court records

Sources

Primary materials plus reporting. Best-effort analysis: this explainer relies on a mix of primary materials and trusted secondary sources. Official filings and opinions remain authoritative.

Checked Oct 18, 2026Methodology

Court records and filings

Reporting and analysis