Case study № 01

Rebuilding claims intake for 4.2 million members

Lattice Health's internal claims tool had grown into a 137-field form that took adjusters 14 minutes on average to complete. A twelve-week rebuild reduced that to 3 minutes and cut rework by 38%.

Measured

Outcomes.

Median intake time
14 → 3 min

Measured across 2,400 adjusters, weeks 1 and 12

First-pass rework
−38%

Claims returned for missing fields

Internal tool NPS
+19 NPS

Adjuster survey, post-launch

Visible fields at any time
137 → 48

The context

Lattice Health processes roughly nine thousand claims every weekday across three regional offices. Every one of those claims starts its life on a single internal form that has accumulated fields the way a coat accumulates patches. The form had last been redesigned in 2014. Since then each new compliance requirement, each new line of business, each new insurance product had bolted another field or another conditional on top of the last.

Original form field audit. Fields used on less than 5% of claims are shaded. Credit: Internal audit, week 1

By the time we were brought in, the form was taking adjusters an average of fourteen minutes to complete, and roughly a quarter of all submissions were being sent back for missing or contradictory data. The cost of that rework was estimated at $2.1M annually in adjuster time alone, not counting downstream delays to members waiting on their claims to resolve.

What we inherited

Lattice had already tried two previous redesigns. Both had stalled. The first had tried to replace the form wholesale and ran into three years of compliance sign-off. The second had added “smart defaults” that adjusters universally overrode because the defaults had been tuned for the wrong population. Whatever we did, we had to survive the compliance review and earn adjuster trust within a single release cycle.

Old layout on the left, new three-step progressive layout on the right. Field count dropped from 137 to 48 visible on a typical claim.

The brief I took back to leadership

After the first two weeks of research, I rewrote the brief. The original ask was “reduce intake time”. The revised brief was “reduce the number of fields an adjuster must look at, and make validation a helper instead of a gatekeeper”. Leadership signed off on the revised brief on a Friday. Engineering had a working prototype on the following Thursday.

What made the difference

Three decisions, in order of how much they moved the numbers.

First, we hid every field that could be inferred or defaulted. Not removed, compliance still needed the values to land in the database, but hidden from the adjuster unless the inference confidence dropped below 80%. That alone removed 61 fields from the visible form on a typical claim.

Second, we moved validation from blocking to advisory. The submit button stays enabled unless a field will actively fail the downstream system. Everything else is a nudge in the right rail that the adjuster can address during review. This change alone reduced the number of “save and come back” round trips from an average of 2.3 per claim to 0.4.

Third, we built a live preview of the claim as it would appear to the downstream reviewer. Adjusters stopped making formatting mistakes because they could see the formatted output update as they typed. The preview is the most used feature in the post-launch telemetry.

Preview pane anchored to the right rail. Updates in place as the adjuster types.

The preview pane did for our adjusters what spell-check did for writers. They stopped proofreading and started moving.

Marcus Hale Engineering Lead, Lattice

What did not work

The first prototype used a single long scrollable form with smart sections. It tested badly. Adjusters reported feeling “lost” and “unable to tell where I am”. We moved to a three-step progressive layout with a persistent progress indicator and the problem disappeared. The research clearly preferred a structured path over a flexible one, which surprised us, the second redesign had failed partly because it was too structured.

Outcomes

Twelve weeks from kickoff to full rollout. Median intake time dropped from fourteen minutes to three. First-pass rework dropped 38%. The internal NPS for the claims tool moved from −22 to −3, then to +19 over the following six months as adjusters got fully fluent.

The three-region rollout let us catch two serious issues before they reached the whole organisation. One was a date-picker bug that only manifested with the Pacific-time locale; the other was a validation rule that was rejecting claims from a rare insurance product we had not included in the test cohort. Both were caught and fixed within the 48-hour rollback window.

What I would do differently

I would have spent more of the early weeks with the compliance team directly. We got lucky, the review was approved in one pass, but it could easily have taken three months and we would have missed the release window. Next time I start with compliance on day one, not week five.

Approach

Process.

Shadowed 31 adjusters across three regional offices

Before changing anything, we sat beside claims adjusters for two weeks. The form was the smallest part of the problem. Adjusters were reconciling four separate systems in their head, typing answers into fields they had already answered elsewhere, and re-opening closed cases to correct typos. Every friction point got a sticky note and a timestamp. The wall filled up fast.

Mapped the invisible form

The form as built had 137 fields. The form as used had only 48 that mattered on any given claim. The other 89 were legacy columns the database demanded but no adjuster ever touched. Working with the data engineering lead, we identified which fields could be inferred, which could be defaulted, and which could be removed entirely. The final list cut visible fields by 65%.

Designed for recovery, not prevention

Adjusters do not want to be stopped mid-flow to fix a typo. They want to keep moving and be told later. We replaced blocking validation with a running tally in the right rail, three amber flags, one red. Submit remains enabled until the red flag clears. Everything amber is negotiable.

Shipped in slices behind a flag

We rolled the new intake to a single region first, then three, then the rest. Each wave had a 48-hour window where adjusters could flip back to the old tool with one click. By wave three, the opt-out rate was under 2%. By wave five, we turned the old tool off.

Our team had spent four years asking for this form to be fixed. In ten weeks it went from the thing adjusters complained about every morning to the thing they stopped noticing. That is the highest compliment an internal tool can earn.

Nadia Ostrowski VP, Claims Operations, Lattice Health

Credits

Principal Product Designer
Max Mustermann
Engineering Lead
Marcus Hale
Research Partner
Priya Venkat
Product Manager
Dana Kovalenko
Clinical Subject-Matter Expert
Dr. Renée Obi, MD

Toolchain

  • Figma
  • Dovetail
  • Maze
  • Linear
  • Storybook

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