Question · CMS

Can a Medicare Advantage plan use AI to deny coverage?

CMS-4201-F requires Medicare Advantage plans to base medical necessity decisions on the individual enrollee's medical history, physician recommendations and clinical notes, follow Traditional Medicare coverage rules, and have a qualified clinician review any adverse decision.

AboutCMS
Legal forceBinding on Medicare Advantage organizations
Applies from1 Jan 2024
Checked21 Oct 2026

01 / The answer

The short answer

A Medicare Advantage plan may use an algorithm or AI tool to help make coverage decisions, but the tool cannot be the basis for a denial on its own. Under rules that apply from January 1, 2024, medical necessity decisions must rest on the enrollee's own medical history, physician recommendations and clinical notes, plus Medicare coverage criteria (42 CFR 422.101(c)). CMS's February 6, 2024 FAQ memo says the plan stays responsible for making sure any AI tool follows these rules. A physician or other qualified professional must review any expected medical necessity denial before it is issued.
CMS · checked 21 Oct 2026

02 / The rule

What CMS requires

CMS-4201-F requires Medicare Advantage plans to base medical necessity decisions on the individual enrollee's medical history, physician recommendations and clinical notes, follow Traditional Medicare coverage rules, and have a qualified clinician review any adverse decision. CMS's February 2024 FAQ applies this to AI: plans may use algorithms to assist, but not as the sole basis for denying or ending care.

  1. 01Base each medical necessity decision on the enrollee's own medical history, physician recommendations and clinical notes (42 CFR 422.101(c)(1)).
  2. 02Follow Traditional Medicare NCDs and LCDs; use internal criteria only when coverage is not fully established, publicly posted and evidence-based.
  3. 03Have a physician or appropriate professional with relevant expertise review any expected adverse medical necessity decision before issuing it.
  4. 04Have a physician-led utilization management committee approve and annually review all UM and prior authorization policies.

03 / Records

Records to keep

  1. 01Case files showing individual records reviewed for each adverse decision
  2. 02Clinician person reviewing it credentials and sign-off on denials
  3. 03UM committee minutes approving algorithm-supported policies
  4. 04Published internal coverage criteria with supporting evidence

Optional evidence · where Planisphere fits

Keep a record anyone can check

When your team meets a duty, Planisphere can seal the event it reports as a receipt.

01 · Your teamRecord the event

A disclosure shown, a review signed, a model change approved: the event your system reports.

02 · PlanisphereSeal it

The event becomes a sealed receipt, dated and attributed to whoever is signed in.

03 · AnyoneCheck it

Paste the receipt into Verify. No account or key.

A record supports your compliance evidence process. It is not a legal finding or a certification. Systems that call Planisphere's gate API can also hold or refuse an action before it runs.

SOURCES

Go back to the source

RELATED

Related: CMS: the full guide · How do I show my utilization-management algorithm assessed the individual patient?