Prior authorization: how to reduce delays

What prior authorization is — and why it stalls

Prior authorization (also called pre-authorization or precertification) is a payer's requirement that you get approval before a service is provided, confirming the plan considers it medically necessary and covered. It commonly applies to advanced imaging, surgeries and procedures, injectable and specialty drugs, durable medical equipment, and some therapy and behavioral health services.

The delay is rarely one big problem. It's an accumulation of small ones: nobody is sure whether this particular plan requires authorization for this particular code, the request goes out missing a piece of clinical documentation, and then it sits in a queue with no owner watching it. Each of those is fixable with process rather than luck.

Where the delays actually come from

When practices trace their authorization backlog to root causes, the same handful keeps showing up:

• Requirement uncertainty. Requirements vary by payer, by plan within that payer, and by CPT code — and Medicare Advantage or Medicaid managed-care plans often differ from the parent payer's commercial rules.
• Incomplete first submissions. A request missing chart notes, prior conservative treatment, imaging results or a clear clinical rationale gets a request-for-information instead of a decision, which pauses the decision timeline and adds days to it.
• Fax-and-forget workflows. A request sent with no reference number captured and no follow-up date has no way to be found again.
• No ownership. When authorization is everyone's job at the front desk, it's nobody's job on a busy day.
• Third-party review vendors. Many plans route imaging, oncology or musculoskeletal decisions to a benefit-management vendor with its own portal, criteria and turnaround — so calling the payer's general line usually just routes you back to the vendor.
• Late discovery. The requirement is found after the service is scheduled — or after it's performed, which is the expensive version.

Build a payer-specific requirements list

The single highest-return fix is to stop deciding case by case. Build a living grid of your top payers and plans against the procedures you actually perform: does this code require authorization, who reviews it, which portal, what clinical criteria, and what documentation must accompany the request.

Pair it with a scheduling trigger. Any procedure on the list gets flagged the moment it's booked, not the day before, so the request goes out with time to absorb a request for more information. Because payer policies change, the grid needs an owner and a review cadence — a stale requirements list quietly recreates the problem it solved.

Submit complete the first time — and submit electronically

Most authorization delays are self-inflicted resubmissions. Before a request goes out, confirm it carries the exact CPT and diagnosis codes to be performed, the ordering and rendering providers with their identifiers, the site of service, the clinical documentation the payer's own policy asks for, and evidence of any required step therapy or conservative treatment tried first.

Where the payer supports electronic prior authorization — the HIPAA 278 health care services review transaction — through your practice-management system, clearinghouse or its portal, use it. Payer adoption is uneven, but electronic submission gives you a timestamp, a reference number and a status you can check without waiting on hold: three things a fax cannot give you. And verify eligibility and benefits before you request authorization; an authorization on an inactive plan is wasted work. See how insurance verification feeds this step.

Track every authorization like a claim

An authorization request is an open item with money attached, so it deserves the same discipline as an unpaid claim. Log every request with its reference number, submission date, payer or review vendor, the approved CPT codes, the units or visits approved, and the authorization's valid date range. Then work it from a worklist — pending requests reviewed daily, with an owner and an escalation point.

Two failure modes hide in the tracking gap. The first is the request that was never actually received. The second is the approval that expires, or gets used up, before the service is rendered — especially with therapy visit counts and multi-stage treatment plans. Both are invisible without a tracked list, and both end up as denials.

When it's denied: peer-to-peer and appeal

An adverse determination is not the end of the conversation. Read the notice for the actual reason — a request for missing information is a different problem from a denial for failing a specific clinical criterion. If it's a criteria dispute, request a peer-to-peer review so the ordering provider can speak directly with the plan's reviewing physician, and go in with the specific clinical facts the criteria turn on; plans usually allow only a short window to request one. Requests for information are simpler: send exactly what was asked for, promptly and in full.

Where the service is urgent, ask for an expedited review. Urgent turnaround is far shorter than standard review, and for most plan types it is capped by federal or state rules as well as by the plan's own policy — check the plan's published timeframes. If the determination stands, follow the plan's formal appeal path and track every deadline — and document the whole trail, because it becomes the evidence if the claim is later denied for authorization.

Authorization is not a payment guarantee — close the billing loop

Approval upstream still fails downstream if the claim doesn't match. Put the authorization number on the claim (Box 23 on the CMS-1500), bill the exact codes that were approved, stay inside the approved units and date range, and confirm the rendering provider and site of service match the request. When the procedure changes in the room — a study performed with contrast that was authorized without it, an additional code added — the authorization has to be updated, or a retrospective review requested where the payer allows one, otherwise the claim will be denied for a service that was genuinely approved.

Track authorization-related denials as their own category. If one payer or one referral source keeps generating them, that's a process fix at the source rather than an appeal you re-file forever. Our guides to denial management and reducing claim denials cover how to run that loop.

How Synergy handles prior authorization

Synergy handles eligibility verification and prior authorizations before the service, so requirements are found at scheduling instead of after the claim is denied. We submit complete requests, track each one to a decision with its reference number, approved codes and valid dates, and make sure the authorization details carry through to the claim. Denials are worked within 48 hours and appealed with documentation — part of how we target a 98% clean-claim rate, submit claims within 24 hours, and keep A/R over 120 days under 10%.

There's no long-term contract, a 30-day free trial and a 90-day money-back guarantee on full revenue cycle management. If authorizations are delaying care and holding up cash at your practice, get a free practice audit and we'll show you where the requests are stalling.