HB 5377 Connecticut House · 2026 Regular Session

AN ACT CONCERNING RETURN OF HEALTH CARE PROVIDER PAYMENTS.

HB 5377 modifies health insurance billing rules to protect providers and improve transparency. It shortens the timeframe insurers can demand repayment for claims from 18 to 15 months after a clean claim is submitted (except for fraud, billing errors, duplicate payments, or federal program overlaps), requires insurers to provide 30 days' notice and an electronic appeal process for repayment demands, and mandates off-site hospital facilities to submit their unique national provider identifier (NPI) and tax ID on all claims. These changes directly affect health insurers, healthcare providers, and off-site hospital facilities, ensuring clearer billing requirements and reducing disputes over claim payments. The bill takes effect October 1, 2026, for the NPI requirement and January 1, 2027, for the repayment timeline changes.

Issues: ✓ Healthcare

Bill status signed all 5 stages cleared

Introduction

Feb 2026

Committee Review

Mar 2026

House Passage

Apr 2026

Senate Passage

May 2026

Signed into Law

May 2026

Introduced Feb 26, 2026 Signed May 27, 2026

Maddy AI version diff · 1 comparison

What changed between versions

Raised Bill → INS Joint Favorable Substitute · 4 edits

MODERATE

The bill was amended to strengthen protections for healthcare providers by clarifying notice requirements and expanding the appeal process. It also added a new requirement for off-site hospital facilities to include specific identification numbers on claims to ensure accurate billing.

Scope change

The bill's scope was expanded to include specific technical requirements for off-site hospital facilities regarding claim submissions.

REQUIREMENT

The method for delivering cancellation or denial notices to providers was updated to allow for electronic mail, secure portals, or clearinghouses, not just traditional mail.

The appeal process was strengthened by changing the language from 'include' to 'need not be limited to' electronic appeals and adding a rule that payment demands are paused during an appeal.

A new requirement mandates that off-site hospital facilities must submit their unique National Provider Identifier and federal tax ID on every claim starting January 1, 2027.

ENFORCEMENT

Off-site facilities that fail to include the required identification numbers on claims will now be held liable for the payment themselves.

Floor votes · Senate May 6, 2026 · House Apr 23, 2026

How they voted

33–0

Passed · 3 other

Total votes 36

May 6, 2026

D Democratic25

22 Yea 3

88% Yea

R Republican11

11 Yea

100% Yea

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Amendments

May 27, 2026

Signed into law

SIGNED BY GOVERNOR

lower

May 6, 2026

Senate · Passed

Senate Vote: pass (33-0-3)

senate

May 5, 2026

Upper · Passed

SEN. PASSED, HO. AMEND. SCH. A

upper

May 5, 2026

Upper · Passed

SEN. ADOPTED HO. AMEND. SCH. A

upper

Apr 23, 2026

Lower · Passed

HOUSE PASSED, HOUSE AMEND. SCH. A

lower

Apr 23, 2026

Lower · Passed

HOUSE ADOPTED HOUSE AMEND. SCH. A

lower

Mar 12, 2026

Lower · Passed

Joint Favorable Substitute

lower

Feb 26, 2026

Committee

REF. TO JOINT COMM. ON Insurance and Real Estate

lower

22 primary · 0 co-sponsors