Terms of Service

1. Acceptance of Terms

By accessing or using Arceum ("the Service"), you agree to be bound by these Terms of Service. If you do not agree, do not use the Service. "Arceum" refers to the website located at arceum.ai and all associated tools, data, and content operated by Arceum LLC.

2. Description of Service

Arceum provides a free denial code reference tool for healthcare billing professionals. The Service publishes Claim Adjustment Reason Codes (CARCs) and Remittance Advice Remark Codes (RARCs) sourced from X12 and the Centers for Medicare & Medicaid Services (CMS). Arceum also provides interpretive guidance, resolution steps, and payer notes authored by Arceum.

3. Free Tool — Provided "As Is"

The denial code lookup tool is provided free of charge. The Service is provided "as is" and "as available" without warranty of any kind, express or implied, including but not limited to warranties of merchantability, fitness for a particular purpose, or non-infringement.

Arceum makes no guarantee that the Service will be uninterrupted, error-free, or that defects will be corrected. You use the Service at your own risk.

4. Data Sources — X12 and CMS

CARC and RARC code descriptions published on Arceum are sourced verbatim from the official X12 code lists and CMS quarterly publications. Arceum is not affiliated with X12, the ASC X12 organization, or the Centers for Medicare & Medicaid Services. Official sources:

• X12 CARC: x12.org/codes/claim-adjustment-reason-codes/
• X12 RARC: x12.org/codes/remittance-advice-remark-codes/
• CMS: cms.gov/medicare/coordination-benefits-recovery/overview/x12-5010-gv2-codes

Code lists are updated quarterly by X12/CMS. While Arceum endeavors to maintain current data, there may be a delay between official updates and their appearance on the Service. Always verify critical billing decisions against the primary official sources.

5. Not Professional Billing Advice

The content on Arceum — including code descriptions, resolution steps, appeal templates, payer notes, and all other materials — is provided for informational and reference purposes only. It does not constitute professional billing advice, legal advice, or compliance guidance.

You are solely responsible for your billing decisions, claim submissions, and compliance with applicable federal and state laws, payer contracts, and CMS guidelines. Consult a qualified billing professional or healthcare attorney for advice specific to your situation.

6. Limitation of Liability

To the maximum extent permitted by applicable law, Arceum LLC and its officers, employees, agents, and licensors shall not be liable for any indirect, incidental, special, consequential, or punitive damages, including but not limited to lost revenue, lost profits, claim denials, payer audits, compliance penalties, or loss of data arising out of or related to your use of the Service.

Arceum's total liability for any claim arising from use of the Service shall not exceed the amount you paid Arceum in the twelve months preceding the claim, or $100, whichever is greater.

7. Acceptable Use

You agree not to:

• Scrape, crawl, or systematically download Service content at scale
• Use the Service to train AI or machine learning models without written permission
• Attempt to reverse-engineer or disrupt the Service infrastructure
• Submit false or misleading information through any form on the Service

8. Intellectual Property

The Arceum brand, logo, original content (resolution guidance, payer notes, blog posts, appeal templates), and software are the intellectual property of Arceum LLC. Official CARC/RARC code descriptions are published by X12 and CMS and remain their respective property. Nothing in these Terms grants you a license to reproduce or distribute Arceum's proprietary content.

9. Governing Law

These Terms are governed by and construed in accordance with the laws of the State of Delaware, without regard to its conflict of law provisions. Any dispute arising from or related to these Terms shall be resolved exclusively in the state or federal courts located in Delaware.

10. Changes to These Terms

We reserve the right to modify these Terms at any time. Material changes will be communicated via email to registered users. Continued use of the Service after changes are posted constitutes acceptance of the revised Terms.

11. Contact

Questions about these Terms? Email hello@arceum.ai.