AGAR Guide
CARC50ReferenceCurrentVerified Aug 15, 2026

CARC 50

AR Guide Workflow

Medical Necessity

The payer determined the service was not medically necessary or reasonable according to its policy. These denials are documentation-driven.

Open denial workflow

AR Guide explanation

What it means

The payer determined the services were not medically necessary according to its policy.

AR Guide knowledge

Common denial category

Medical Necessity — The payer determined the service was not medically necessary or reasonable according to its policy. These denials are documentation-driven.

AR Guide knowledge

Common causes

  • Documentation does not support the level of care
  • Service not covered by the payer's medical policy
  • Missing clinical documentation at the time of review

AR Guide knowledge

What AR should verify

  1. Review the payer's medical policy or coverage determination cited for the denial
  2. Confirm the clinical documentation supports the service
  3. Check whether a prior authorization would have prevented the denial

AR Guide knowledge

Recommended action

  1. Appeal with clinical documentation and a reference to the applicable policy
  2. Ask the payer to cite the specific policy or guideline used

AR Guide knowledge

Escalation

  • If the payer cannot cite a specific policy, escalate — denials must be based on a defined policy.

AR Guide knowledge

QA checkpoint

  • Attach supporting clinical documentation on the first appeal
  • Track denial reasons by payer and policy to spot patterns

About this guidance: Note

AR Guide knowledge is general reference content written by our team — it is not payer-specific policy and never replaces the payer’s documentation or your contract. Always confirm specifics with the payer.