Deterministic software
The deadlines never depend on a model.
Eligibility windows, the open negotiation clock, and the one claim per CPT structure run on deterministic software. No model decides whether you are in time to file.
OUT OF NETWORK RECOVERY FOR SURGICAL PRACTICES
The No Surprises Act gets them paid through federal IDR. Surgeon built software your billing team runs in five minutes per claim.
Your team reviews. Your team submits. You keep the recovery.
Recovery proof points
88%
Source: Georgetown University CHIR, March 2026
5 min
No 20% cut
How Sydra works
Three steps from denial to federal IDR
01
Import the denied or underpaid claim.
Eligibility and CPT mapped automatically.
02
Review the Claude built IDR packet.
Claude, the AI built by Anthropic and run through Amazon Bedrock, identifies every eligible CPT, calculates qualified payment amounts by geography, and flags specialty specific exceptions. Your billing team reviews every decision before anything is filed.
03
Submit and keep the recovery.
Your team files; your EMR stays your EMR.
Your team reviews. Your team submits. You keep the recovery.
Built on Claude
Built by people who read the AI billing horror stories too
The unattributed black box is the part you should worry about. Sydra is not that. The work is split across three layers, and you can see where each one starts and stops.
Claude via Amazon Bedrock
Reasoning runs on a named frontier model.
Claude reads each operative note and EOB, identifies the eligible CPT, calculates qualified payment amounts by geography, and drafts the market rate and clinical argument for that specific dispute.
Human escalation
Your team approves every filing.
Your billing team reviews every draft and submits. Nothing files itself. On Sydra plus Kronos Support, a specialist escalates disputed cases.
Sydra runs on Claude via Amazon Bedrock. A named frontier model with published safety standards, inside the same AWS boundary your IT team already trusts.
Your numbers
See what properly filed IDR could recover
Drag the two sliders to match your practice. The estimate uses published CMS win rates and Georgetown CHIR award benchmarks, not a Sydra performance claim.
20
1100+
$15,000
$1,000$200,000+
Uses CMS published win rates (88%) and Georgetown CHIR median award benchmarks. Not a Sydra performance claim.
Estimated annual recovery
$14,256,000
Per month
$1,188,000
A 20% attorney would take
$2,851,200/yr
You keep it with Sydra.
Where you start
Three ways in. Pick the one that sounds like you.
The process used to be too expensive for smaller practices. As of 2026 the federal rule cut filing fees, and the path opened up.
Never heard of this
What is federal IDR?
The No Surprises Act gives out of network providers a federal path to dispute low payments. Most practices do not know it exists. Start here.
Learn the basicsA lawyer takes a cut
Already paying an attorney?
IDR attorneys typically keep 20 percent of every recovery. See the fee math against running it on software you own.
Compare the feesWe do it in house
Filing it yourself?
Building one submission by hand takes 25 to 40 minutes. See what that labor costs at your volume, and how to scale without adding headcount.
Run the numbersWhy surgeon built
Built by a surgeon who files these claims
Sydra and Kronos Revenue are built by Kronos Health, founded by Dr. John M. Abrahams, MD, a board certified neurosurgeon. Specialty depth for orthopedics, neurosurgery, spine, and plastics. One claim per CPT, every time.
Two paths
Same specialty depth. Different operator.
Run it in house
Sydra
Software your billing team operates. Best when you want to keep the workflow and the margin.
Done for you
Kronos Revenue
Our boutique team files every claim for you, specialty coded, for a flat fee, never 20%.
FAQ
Common questions
Next step
Ready to stop writing off out of network claims?
Book a five minute demo and we will walk a real claim from your specialty on the call.
Built on Claude via Amazon Bedrock · Built to support HIPAA safeguards · BAA on request · ModMed and Stedi integrations · SOC 2 aligned, report under NDA · Security details
Get started
Book your five minute Sydra demo
Tell us about your practice. We will confirm IDR pathway fit and walk through a real claim on the call.