Healthcare · Reimbursement Sustainment: Thirty Years of Business Logic, Zero Room for Error
Reimbursement Sustainment: Thirty Years of Business Logic, Zero Room for Error
Safeguarding a decades-old billing system the business cannot operate without
The Client · A major American medical group and hospital-based physician network

Overview
The client engaged Taller to sustain the reimbursement system that has run its billing for thirty years, where a single careless change could cost millions in bad debt.
The Problem
The medical group's reimbursement area ran on a system that had been in production for thirty years: very complex code, very complex business rules, and no mandate to replace it. The mandate was harder than replacement: keep it working. In this environment there were no greenfield choices and no technical reinvention, and a single careless change could break billing logic and cause millions of dollars in bad debts.
The Solution
Taller sustained the legacy reimbursement system within the client's established Progress OpenEdge stack. The engagement demanded strict adherence to the client's existing technology, with no room for reinvention or alternative approaches. The work was logic-expert work: mastering three decades of accumulated business rules, applying rigorous analysis before every change to safeguard billing integrity, and resolving maintenance tickets end to end across the reimbursement domain with high availability and a proactive posture.
The Impact
Taller sustained the reimbursement area with no broken billing logic, no bad-debt incidents, and no disruption. In legacy sustainment, those are the only metrics that matter.


