No Surprises Act & State IDR Guides
California No Surprises Act & IDR Guide
California enforces an independent state surprise medical billing resolution framework under Cal. Health & Safety Code § 1371.9. Out-of-network balance billing disputes operate under a strict jurisdictional bifurcated model: state-regulated fully insured plans, municipal plans, and participating entities utilize the DMHC / CDI Independent Dispute Resolution Program, whereas self-funded ERISA employer plans and air ambulance disputes fall under the Federal No Surprises Act (45 CFR § 149.510) Independent Dispute Resolution (IDR) portal.
Plain-language overview
Bifurcated: State-regulated plans follow California surprise medical billing arbitration under Cal. Health & Safety Code § 1371.9; ERISA self-funded and air ambulance claims proceed under Federal IDR.
California enforces an independent state surprise medical billing resolution framework under Cal. Health & Safety Code § 1371.9. Out-of-network balance billing disputes operate under a strict jurisdictional bifurcated model: state-regulated fully insured plans, municipal plans, and participating entities utilize the DMHC / CDI Independent Dispute Resolution Program, whereas self-funded ERISA employer plans and air ambulance disputes fall under the Federal No Surprises Act (45 CFR § 149.510) Independent Dispute Resolution (IDR) portal.
Start with plan jurisdiction, not the provider's location alone. Fully insured coverage may be governed by a specified state process, while self-funded employer plans commonly remain in the Federal Independent Dispute Resolution process. Confirm eligibility from the remittance, plan information, applicable state law, and current federal guidance before opening a dispute.
Which process applies in California?
State Regulated Coverage
Fully insured commercial group, individual, and state-governed health plans in California fall under Cal. Health & Safety Code § 1371.9 administered by the California Department of Managed Health Care & CDI. Review the member card and payer remittance to confirm state-level jurisdiction before opening an action.
Self Funded Coverage
Self-funded employer group health benefit plans governed exclusively by ERISA are exempt from California state dispute mandates and proceed directly to the Federal No Surprises Act IDR mechanism, unless the plan sponsor has made an affirmative statutory opt-in under applicable state rules.
Air Ambulance And Federal Scope
Air ambulance claims and disputes involving out-of-state non-qualifying plans in California fall exclusively under Federal IDR jurisdiction under 45 CFR Part 149.
Open negotiation requirements
State Process
Under Cal. Health & Safety Code § 1371.9, parties in California may engage in state-mandated informal dispute negotiation or direct payment conciliation before filing with the DMHC / CDI Independent Dispute Resolution Program. Timelines and documentary exchanges are strictly governed by California Department of Managed Health Care & CDI procedural rules.
Federal Process
For ERISA self-funded claims and federal track disputes arising in California, initiating parties must complete the standard federal 30-business-day open negotiation period using the CMS-10779 open negotiation notice form prior to initiating Federal IDR.
Federal and state IDR procedure
State Dispute Forum
Eligible California state disputes are adjudicated through the DMHC / CDI Independent Dispute Resolution Program. State determinations apply statutory benchmarks including Greater of average contracted rate or 125% of Medicare.
Federal Dispute Forum
Qualifying self-funded claims from California proceed through the CMS Federal IDR Portal (nsa-idr.cms.gov) with Certified Independent Dispute Resolution Entities (CIDREs).
Decision Model
Arbitration under Cal. Health & Safety Code § 1371.9 is conducted on a binding final-offer ("baseball-style") basis, requiring the arbitrator to select either the provider or the health plan offer without independent compromise.
No Surprises Act and IDR deadlines
Deadlines can depend on the trigger event and may be affected by agency relief notices. Confirm the live rule before filing.
| Event | Timeframe |
|---|---|
| Initial Payer Payment or Denial Notice in California | Generally 30 calendar days from receipt of clean out-of-network claim by the payer |
| Federal Open Negotiation Period (California ERISA Claims) | 30 business days from verified service of CMS open negotiation notice |
| Federal IDR Initiation (California Federal Track) | Within 4 business days following the close of the 30-business-day open negotiation window |
| California State Dispute Filing (Cal. Health & Safety Code § 1371.9) | Follow California Department of Managed Health Care & CDI procedural guidelines and filing timeframes under Cal. Health & Safety Code § 1371.9 |
Documentation checklist
- Copy of patient health insurance identification card front and back (establishing plan sponsor and ERISA vs. California state jurisdiction)
- Itemized billing statement (CMS-1500 or UB-04) showing procedure codes, modifiers, and billed charges
- Explanation of Benefits (EOB) or Electronic Remittance Advice (ERA) detailing initial payment amount, Qualifying Payment Amount (QPA), and CARC/RARC codes
- Standard CMS Open Negotiation Notice Form (CMS-10779) with certified electronic delivery or certified mail delivery confirmation
- Evidentiary submission demonstrating clinician training, board certification, facility teaching status, case complexity, and regional commercial rate data in California
Responsible agencies
- California Department of Managed Health Care & CDIState Surprise Medical Billing & California Dispute Administration
- Centers for Medicare & Medicaid Services (CMS) / CCIIOFederal No Surprises Act & IDR Portal Oversight
Primary legal and regulatory sources
- California Health and Safety Code § 1371.9California Government & Regulatory Authority · Current statutory code
- California Department of Managed Health Care & CDI Official Healthcare Regulatory PortalCalifornia Department of Managed Health Care & CDI · Official Agency Portal
- 45 CFR § 149.510 — Federal Independent Dispute Resolution ProcessU.S. Government Publishing Office / CMS · Current Federal Regulation
This operational reference is educational, is not legal advice, and does not create an attorney-client relationship.
Related forms and official resources
Common questions
- Does California use state surprise-billing arbitration or Federal IDR?
- California enforces an independent state surprise medical billing resolution framework under Cal. Health & Safety Code § 1371.9. Out-of-network balance billing disputes operate under a strict jurisdictional bifurcated model: state-regulated fully insured plans, municipal plans, and participating entities utilize the DMHC / CDI Independent Dispute Resolution Program, whereas self-funded ERISA employer plans and air ambulance disputes fall under the Federal No Surprises Act (45 CFR § 149.510) Independent Dispute Resolution (IDR) portal.
- What No Surprises Act and IDR deadlines should providers track in California?
- Initial Payer Payment or Denial Notice in California: Generally 30 calendar days from receipt of clean out-of-network claim by the payer; Federal Open Negotiation Period (California ERISA Claims): 30 business days from verified service of CMS open negotiation notice; Federal IDR Initiation (California Federal Track): Within 4 business days following the close of the 30-business-day open negotiation window. Verify the trigger date, current agency notices, and any extension before acting.
- Which agencies administer these rules in California?
- The guide identifies California Department of Managed Health Care & CDI, Centers for Medicare & Medicaid Services (CMS) / CCIIO. The correct agency depends on the plan and claim jurisdiction.