Documentation

Altair Documentation

Start with the Altair platform: solutions, comparisons, and the revenue cycle guide. Or browse the billing reference: denial codes, payer-specific guides, billing modifiers, regulatory requirements, clinical specialty guidance, and state laws.

Platform

Solutions

How Altair runs the revenue cycle autonomously: eligibility, prior authorization, scrubbing, denials, appeals, and financial intelligence.

Compare Altair

Head-to-head comparisons of Altair against the leading RCM and medical billing platforms.

Alternatives

Honest alternatives roundups for the major platforms, and where Altair fits on top of your stack.

RCM guide

The complete guide to revenue cycle management, from eligibility to payment.

Best AI RCM software

The 2026 landscape of AI revenue cycle platforms, organized by buyer need.

Reference library

Denial Codes

CARC denial code reference: what each code means, why it happens, and how to resolve it.

Glossary

Medical billing terminology: clear definitions for the terms billing teams encounter daily.

Billing Modifiers

CPT modifier usage rules, documentation requirements, and payer acceptance guidelines.

Payer Guides

Payer-specific billing guides: coverage policies, authorization timelines, appeals, and denial patterns.

Regulations

Healthcare regulatory requirements: compliance rules, deadlines, and how to stay compliant.

Clinical Specialties

Specialty-specific billing guidance for behavioral health, cardiology, dermatology, and more.

State Billing Laws

State-by-state filing deadlines, balance billing rules, surprise billing protections, and prior auth requirements.