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Diagnostics labs

What actually breaks when you automate prior authorization

Eight years of running one of these programs, and a list of the five things that break. Four of the five are organizational rather than technical, which is the part most pitches leave out.

By The CercaLabs team · Published July 28, 2026 · 3 minute read

Why do prior auth automation projects fail?

Almost never because of the technology. In eight years of running a program that now handles about 150,000 transactions a month, the failures we have seen and caused trace back to five things, and four of them are organizational.

This is the list we would want to see before signing a contract, so here it is.

1. Payor portals change, and nobody owns the breakage

Portals change layout, add steps, rotate authentication and deprecate pages, on nobody's schedule but their own. Automation built against a portal will break. That is not a design flaw to engineer away; it is a maintenance cost to budget for.

What separates a program that survives from one that dies in month nine is whether a named person owns the breakage with a same-day response commitment. Not a queue. A person.

Two design choices reduce the frequency:

• Prefer standards-based interfaces and transactions where the payor offers them. They are

dramatically more stable than a browser session. - Keep rules in configuration, not code. A payor policy change should be an edit, not a release.

If your vendor's proposal has no maintenance line item, the proposal is incomplete.

2. The process was automated before it was standardized

This is the most expensive mistake and the easiest to make, because standardizing is boring and automating is exciting.

If two coordinators handle the same payor differently and only one gets approved first time, automating "the process" means picking one of them arbitrarily and encoding it at scale.

Standardize first. At our diagnostics client, workflow standardization was the unglamorous half of the engagement and the source of most of the results.

3. The first target was chosen for visibility instead of stability

The workflow everyone complains about most is usually the worst first choice. It is loud because it is complicated, and complicated means unstable, and unstable means the pilot fails in front of an audience.

Choose the first target on volume and stability, not on annoyance.

4. Access was assumed rather than confirmed

"IT will give us a service account" is a project plan built on a sentence nobody has said yet. Security reviews take weeks and sometimes end in no.

Confirm the access route before scoping, in this order of preference:

Access route | Integration effort | Typical security review An existing clinical data interface | Low | Fast: already approved Read-only service account | Low | Moderate Scheduled report extract | Low | Fast Attended automation in a credentialed user session | None | Often fastest, because no new integration exists to review

The last row surprises people. Screen-level automation inside an attended session frequently clears a security review faster than a new integration, precisely because it introduces no new data path.

5. Nobody agreed what success meant

A program with no baseline cannot be defended at budget time. Before anything is built, record touches per claim, turnaround time, denial rate, and hours spent per week on the target workflow. Rough numbers are fine. No numbers is fatal.

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