Our Story
Built by people who've seen the problem firsthand.
Every year, US healthcare practices leave hundreds of billions of dollars on the table because billing teams can't quickly decode what payers are saying. We built Arceum to change that.
$262B
Claims denied annually
Across US healthcare payers each year
65%
Of denials are recoverable
With the right follow-up and documentation
11%
Average denial rate
Industry average across all specialties
Mission
Be the world's leading authority on revenue cycle management.
Every CARC and RARC denial code published by X12 and CMS belongs on Arceum — with accurate descriptions sourced verbatim from official publications, not approximated or generated. Billing teams shouldn't have to dig through government PDFs to understand what a payer is telling them.
Beyond definitions, Arceum layers on actionable resolution steps, payer-specific notes, and 835 transaction patterns so billing teams can move from "what does this code mean?" to "claim submitted" in minutes, not hours.
Why Arceum
The problem with existing tools.
CMS PDFs aren't searchable the way billers think.
The official code lists are accurate but buried in quarterly PDFs. Finding the right code means knowing which document to download, which version it applies to, and cross-referencing payer-specific rules — all while a claim sits in your queue.
Generic lookups stop at the definition.
Most denial code tools tell you what a code means. Arceum tells you what to do about it — with resolution steps, common RARC pairings, and payer notes specific to dental, medical, and behavioral health.
Billing teams deserve better tooling.
Healthcare billing is one of the most specialized jobs in the country. The people doing it deserve software that understands the nuances of ERA files, 835 transactions, and payer adjudication patterns — not just a search box.
Start looking up codes for free.
376 CARC codes. 712 RARC codes. 176 common pairings. All searchable, all free.
Explore the Code Library →