Contact
For editorial corrections, statute-citation updates, or feedback on a state matrix row, email editorial@nsaidr.us.
What we cannot do
- Review your individual bill or EOB.
- Tell you what dispute path applies to your specific situation beyond what the decoder routes to.
- Provide legal, medical, or insurance advice.
- File complaints, appeals, or PPDR/IDR initiations on your behalf.
Where to actually file
- CMS No Surprises Help Desk: 1-800-985-3059 (free; 90-day NSA complaint window)
- Federal IDR portal: nsa-idr.cms.gov (provider/plan only — not for patients)
- PPDR for self-pay: cms.gov/nosurprises/consumers
- State DOI complaints: See your state's entry on the sources page or the state-specific page under /states.
Free first step — CMS No Surprises Help Desk
The CMS-administered consumer complaint pathway. Free, federal, and the recommended first action for any balance-billed insured patient. You have 90 calendar days from when you knew or should have known of the NSA violation to file.
Legal entity
NSAidr is operated by Desymphony EOOD, a Bulgarian limited liability company with its registered office in Sofia, Bulgaria. Business inquiries: info@desymphony.com.