Change Healthcare (Optum): The Clearinghouse That Broke American Healthcare

One in three U.S. patient records. 15 billion transactions per year. And in February 2024, all of it went dark for weeks. Here's where Change Healthcare stands in 2026 — and what RCM leaders need to know before relying on it again.

Overview

Change Healthcare is the largest healthcare clearinghouse in the United States by a significant margin. Before the February 2024 cyberattack, it processed roughly 15 billion healthcare transactions annually — claims, eligibility verifications, prior authorizations, remittance advices, and more — touching an estimated one in three U.S. patient records. No other single entity in American healthcare moves more money or more data.

The company was acquired by Optum (UnitedHealth Group's health services arm) in 2022 for $8.9 billion after a prolonged DOJ antitrust review. The acquisition made UHG the dominant player in clearinghouse infrastructure — a position that became a systemic liability when attackers got in.

What Change Healthcare Actually Does

Strip away the breach coverage and Change Healthcare is a deeply embedded piece of healthcare infrastructure. Its core functions:

• Claims Clearinghouse — Translates provider claims into payer-specific formats, scrubs for errors, and routes to 900+ payer connections. This is the core of the business — the plumbing every transaction flows through.
• Eligibility & Benefits Verification — Real-time 270/271 transactions across commercial, Medicare, and Medicaid payers. Front-desk and registration teams rely on this to confirm coverage before a patient walks in the door.
• Prior Authorization — Electronic PA submission (278) where payers support it. Still largely manual for complex cases, but Change Healthcare has one of the broadest payer-side PA connection networks in the market.
• Payment Accuracy & Analytics — Claims editing, remittance reconciliation (835), payment variance analysis, and denial pattern tracking across the payer network.
• Pharmacy Network — Separate from the medical clearinghouse but equally dominant — Change Healthcare processes a massive share of U.S. pharmacy transactions, including real-time adjudication.
• Revenue Cycle Services — Under the Optum umbrella, Change Healthcare has expanded into outsourced RCM services, analytics, and population health tooling.

The February 2024 Cyberattack — What Actually Happened

On February 21, 2024, ALPHV/BlackCat ransomware operators accessed Change Healthcare's systems using compromised credentials. The attack caused a complete shutdown of Change's clearinghouse and payment processing infrastructure — systems that had no viable redundancy for most of its provider customers.

The downstream impact was immediate and severe:

• Providers couldn't submit claims electronically — many reverted to paper
• Pharmacies couldn't adjudicate prescriptions in real time
• Eligibility verification went dark for weeks at thousands of sites
• Smaller practices, particularly rural and independent, faced existential cash flow crises
• Optum offered emergency loans — which later generated their own controversy over aggressive repayment terms

Systems came back online gradually over several weeks. Full restoration took longer. By mid-2024 most connectivity had been reestablished — but the trust damage was significant and lasting.

Where Change Healthcare Stands in 2026

Two years on, Change Healthcare has largely restored its technical operations. Claim submission, eligibility, and PA workflows are functioning. The 900+ payer connections remain. Volume has rebounded — the lack of alternatives means most providers still route through Change Healthcare whether they want to or not.

What hasn't fully recovered:

• Trust. RCM leaders who lived through February 2024 have longer memories. Security questionnaires for Change Healthcare look different today.
• Regulatory overhang. Congressional hearings, state AG lawsuits (Nebraska's survived a motion to dismiss in 2025), and ongoing HHS enforcement scrutiny haven't disappeared.
• Competitive ground. Availity and Waystar captured meaningful clearinghouse share during the outage. Some of that business hasn't returned.

On the product side, Optum has continued to invest in Change Healthcare's platform under its broader health services strategy. The integration of Change's data with Optum's analytics capabilities — claims data, clinical data, and pharmacy data under one roof — remains a long-term differentiator that no competitor can easily replicate.

AI Capabilities

Change Healthcare's AI narrative is largely about data at scale — not AI-native product design. The clearinghouse position gives Optum visibility into more claims, more denial patterns, and more payer behavior data than any other single entity in healthcare. That's a real and durable advantage for analytics and benchmarking products.

In specific tools: denial prediction and claim editing have ML-based rule enhancement. The payment accuracy products use pattern matching across payer behavior data to flag likely underpayments. These are useful, but they're not differentiated AI — they're data-advantage products built on clearinghouse scale.

True AI-native RCM capabilities (like Waystar's CDI AI via Iodine) are less evident in Change's current product roadmap. Expect AI investment to accelerate as Optum integrates Change's data with its broader analytics platforms.

Who It's For

• Large health systems and IDNs that need maximum payer connectivity breadth and can negotiate enterprise terms
• Organizations already deep in the Optum ecosystem — if your revenue cycle already touches Optum products, consolidating on Change Healthcare's clearinghouse can simplify integration
• Pharmacy operators — Change Healthcare's pharmacy network is dominant and largely unavoidable
• Organizations that prioritized disaster planning post-2024 — using Change as primary with a secondary clearinghouse relationship established

It's less suited for organizations without any backup clearinghouse strategy, or providers looking for a self-serve, transparent-pricing clearinghouse experience.

Pricing

Custom enterprise contracts only. No published pricing. Based on market information:

• Per-transaction pricing for claim submission, typically volume-tiered
• Eligibility verification priced per transaction or bundled
• Analytics and payment accuracy tools typically separately licensed
• Large health system contracts often bundled with other Optum products — making true unit economics difficult to parse

Integrations

900+ payer connections — the broadest in the market. Integrates with every major EHR and PM platform including Epic, Oracle Health (Cerner), MEDITECH, athenahealth, and most specialty-specific PM systems. The clearinghouse sits between providers and payers, so EHR integration is table stakes — Change Healthcare has it.

Pros & Cons

7 Powers Analysis

Bottom Line

Change Healthcare is not optional for most of U.S. healthcare. Its payer network is too broad, its infrastructure too embedded, and its pharmacy connections too dominant to route around. The February 2024 breach was the most significant healthcare infrastructure failure in U.S. history — and it happened because the market allowed a single company to become a single point of failure.

In 2026, Change Healthcare is operational, Optum-backed, and still processing a third of U.S. healthcare transactions. The strategic question isn't whether to use it — most organizations have no real choice. The question is whether you've built the redundancy to survive the next time it goes down. Because concentration risk doesn't disappear just because the last breach is over.