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Ultimate Guide · Operations

Switching Medical Billing Vendors: The 60-Day Playbook

A step-by-step playbook for moving from one billing vendor to another without losing a dollar of revenue. Parallel-run mechanics, A/R handover protocol, contract clauses to negotiate, and the seven things that go wrong if you skip the audit.

  • 9 chapters · ~14,200 words
  • 60 min read
  • For Practice owner, CFO, Billing manager
  • Updated March 30, 2026

About this guide

Why we wrote this and who it is for.

Switching billing vendors is the single most-feared revenue-cycle decision a practice makes, because the worst case (a botched transition that gaps cash flow for a quarter) is a real outcome in the industry. The good ones are quiet. The bad ones tank a quarter and the CFO never recovers the trust to outsource again.

This playbook is a step-by-step guide for moving without losing a dollar of revenue. It covers the pre-switch audit (six months of remits, A/R aging, denial mix, payer behavior), the parallel-run mechanics (what to put in writing, who keeps submitting during the overlap), the A/R handover (claim-by-claim disposition, pending appeals, timely-filing risk), and the cutover window itself.

It also lists the seven things that go wrong if you skip the audit, the contract clauses to negotiate before signing, and the three-month performance review framework that catches drift before it becomes a problem. Written for the practice owner, CFO, or billing manager running the switch decision.

KM

Karina Martinez, CRCR

Author · Reviewed by Senior RCM Leadership Review

Last reviewed March 30, 2026

Table of contents

All 9 chapters.

Each chapter is a self-contained reference you can read in 5 to 12 minutes. The chapters are sequenced for a first read, but they are written so you can jump straight to the one you need.

  1. 01

    Why most vendor switches fail

    Chapter 1

  2. 02

    The pre-switch audit checklist

    Chapter 2

  3. 03

    Parallel-run mechanics and what to put in writing

    Chapter 3

  4. 04

    Open A/R handover, claim by claim

    Chapter 4

  5. 05

    Pending denials and active appeals

    Chapter 5

  6. 06

    Patient-statement and payment-plan continuity

    Chapter 6

  7. 07

    Cutover window and rollback plan

    Chapter 7

  8. 08

    Three-month performance review and renegotiation

    Chapter 8

  9. 09

    A 90-day vendor-switch project plan

    Chapter 9

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~14,200 words, 9 chapters, 60 min read. Includes a 90-day vendor-switch checklist. One email opt-in, no marketing filler, unsubscribe in one click.

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References

Primary sources cited in this guide.

  • MGMA Vendor Selection and Transition Best Practices.
  • AAPC Healthcare Business Monthly, vendor-switch case studies.
  • CMS Timely Filing Guidelines per Medicare Administrative Contractor.
  • Healthcare Financial Management Association vendor-evaluation framework.
  • State insurance department prompt-pay statutes (varies by state).

Frequently asked

About this guide.

For licensing, partnerships, or co-branded content, email hello@medonix.io.

A step-by-step playbook for moving from one billing vendor to another without losing a dollar of revenue. Parallel-run mechanics, A/R handover protocol, contract clauses to negotiate, and the seven things that go wrong if you skip the audit. The full guide runs 9 chapters across ~14,200 words, written for practice owner, cfo, billing manager.

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