"Does not meet clinical criteria."

That's the entire reason on a lot of imaging denial letters practices receive every week. No named criterion. No explanation of what was missing. Nothing to actually respond to except the same documentation, resubmitted, hoping for a different outcome.

As of 2026, that letter isn't just unhelpful. It's non-compliant.

What actually changed

CMS-0057-F — the same rule that shortened standard prior authorization decisions to 7 calendar days and expedited ones to 72 hours — also requires payers to give a specific reason for every denial, not a generic rejection. For imaging specifically, the reasons payers cite tend to fall into three categories:

• Alternative imaging available — the insurer believes a less expensive test, a CT instead of an MRI for example, could answer the same clinical question
• Insufficient conservative treatment — the insurer wants documented evidence that other treatments were tried first
• Missing clinical documentation — the request didn't include enough detail about the patient's condition to support it

A denial that names none of these, and instead just states "criteria not met" with nothing else, isn't meeting the standard the payer is required to follow.

Why this is more useful than it sounds

Most practices read a vague denial as the end of the conversation — the payer said no, so the options are appeal on the clinical merits or move on. That skips a step that costs nothing to take.

A denial that doesn't name a specific reason gives you something to cite before you even get to the clinical argument: you can point out, in writing, that the letter didn't meet the specific-reason requirement CMS-0057-F requires. That's not a technicality to feel clever about — it shifts part of the burden back onto the payer to actually explain itself, instead of leaving your team to guess what would satisfy the reviewer on a second attempt.

How to actually use it

Read every denial letter for a named, specific reason — not just the outcome. "Does not meet criteria" with nothing else attached is the gap to flag.

Cite the compliance requirement directly in the appeal. State plainly that the denial did not include the specific clinical reason required under current CMS rules, and request that reason explicitly, alongside or ahead of the clinical rebuttal.

Once a specific reason does come through, match the response to it rather than resubmitting the same generic packet:

• Alternative imaging available — explain specifically why the suggested alternative wouldn't answer the clinical question the ordering physician actually needs answered
• Insufficient conservative treatment — provide the documented treatment history, or explain clearly why conservative treatment isn't clinically appropriate for this specific case
• Missing clinical documentation — identify exactly what was missing and resubmit with that specific gap closed, rather than resending the identical request

The pattern worth tracking

Some payers will consistently issue specific, useful denial reasons. Others will keep sending "criteria not met" regardless of what the rule requires. That's worth tracking across your top payers over the next few months — a payer that's vague on nearly every imaging denial isn't a one-off mistake, it's a pattern worth escalating rather than absorbing case by case.

The part worth doing today

None of this replaces a strong clinical appeal. It's a free first move that costs nothing to make and puts the burden back where it belongs. Most practices don't know this requirement exists yet, which means most vague denials right now are going unchallenged on a technicality that's actually working in the practice's favor.

Reading every denial for the missing reason, citing the gap, and drafting the matched response is exactly the kind of repetitive, detail-dependent work asaanbil.com's claims and appeals module is built to speed up — appeal letters drafted directly from the denial notice, with a physician still reviewing and approving before anything goes out. asaanbil.com (https://asaanbil.com)