Coverage Validation

What's possible

Build government systems on the law

Check a workflow Reconcile primary sources

Ground AI models in citable law

Ask about benefits and taxes

Power products on rules you don't rebuild

Simulate policy on real rules

Explore benefits cliffs Simulate household impacts

Axiom Citations Slides

Team Get started

loading…

Computable law for all.

Open, machine-readable encodings of the world's rules — starting with tax and benefit policy.

Product

Axiom platform
Demos
Coverage
Validation
Citations
Documentation

Foundation

About
Team
Blog
Privacy

Connect

Contact
Get updates
hello@axiom.org

© 2026 Axiom Foundation · Doing the public-interest work

Open infrastructure for encoded law

us/regulation/42/408/subpart-B — Subpart B - Amount of Monthly Premiums · Axiom

Axiom
US Federal
Regulations
Title 42
Part 408

Subpart B - Amount of Monthly Premiums

8 sections

Monthly premiums
Reduction in Medicare Part B premium as an additional benefit under Medicare + Choice plans
Increased premiums for late enrollment and for reenrollment
Individuals who enrolled or reenrolled before April 1, 1981 or after September 30, 1981
Individuals who enrolled or reenrolled between April 1 and September 30, 1981
Examples
Rounding the monthly premium
Increased premiums due to the income-related monthly adjustment amount (IRMAA)