In-House Medical Billing vs Outsourcing: How to Decide

Most practice owners do not lose sleep over billing until something breaks. A long-time biller retires, a payer changes its rules, or the bank balance stops matching the schedule. Then the question lands on your desk: should you rebuild billing with your own staff, or pay a company to do it for you?

There is no single right answer. A 2-provider family practice and a 20-provider orthopedic group face very different math. This guide gives you a decision framework based on 3 things that matter most: practice size, the skills you can realistically hire and keep, and how much control you want over collections.

What medical billing actually involves

Before comparing options, be clear about the work itself. Billing is not just “sending claims.” A full revenue cycle covers:

• Verifying insurance eligibility before the visit
• Capturing charges and assigning diagnosis and procedure codes
• Scrubbing and submitting claims to payers
• Posting payments and reading remittance advice
• Working denials and filing appeals
• Following up on unpaid claims in accounts receivable (A/R)
• Sending patient statements and collecting patient balances
• Credentialing providers with insurance plans

Some billing companies handle all of this. Others only submit claims and work denials, leaving front-desk tasks with you. When you compare options, compare the same scope. If you want a deeper overview of the software side, see our guide to revenue cycle management software.

The case for keeping billing in-house

In-house billing means your own employees, using your practice management system or EHR, own the full process.

Control and speed. Your biller sits down the hall from the providers. Coding questions get answered the same day. When a payer denies a batch of claims, you know about it this week, not at month-end.

Institutional knowledge. An experienced biller learns your providers’ habits, your top payers’ quirks and which documentation gaps cause denials. That knowledge compounds over years.

Direct visibility. You can run your own reports at any time. Nobody filters the numbers before you see them.

The downside is fragility. In a small practice, billing often depends on 1 or 2 people. If they leave, get sick or fall behind, cash flow suffers fast. Medicare generally requires claims to be filed within 1 calendar year of the date of service under 42 CFR 424.44, and commercial payers often set shorter deadlines in their contracts, so a backlog can turn into money you can never collect.

Staffing is also a real cost. The US Bureau of Labor Statistics reports a median annual wage of $51,140 for medical records specialists as of May 2025, and that figure excludes benefits, training, software seats and payroll taxes. Experienced coders and billers with specialty knowledge often cost more.

The case for outsourcing

Outsourcing means a third-party billing company, sometimes called a revenue cycle management (RCM) vendor, takes over part or all of the process. They usually work inside your system or connect to it.

Coverage and depth. A billing company has a team, so vacations and resignations do not stop your claims. Larger vendors may also have specialty coders, denial analysts and payer-specific expertise you could not afford to hire.

Predictable cost. Fees scale with your volume, which can feel easier to budget than salaries.

Focus. Owners and office managers get time back for patients, scheduling and growth.

The downsides are real too. You lose some day-to-day control. Response times depend on the vendor. And if the vendor is weak, problems can hide for months behind summary reports.

Key takeaway: Outsourcing moves the work, not the responsibility. Claims go out under your providers’ numbers, and you remain accountable for what is billed. Pick a partner you can audit, not one you have to trust blindly.

How billing companies charge

Vendors use a few common pricing models. Rates vary widely by specialty, claim volume and scope, so get written quotes and compare them line by line.

Percentage-of-collections pricing is the most common model in vendor quotes, and it is usually in the single digits. Be aware of one compliance point. In its compliance program guidance for third-party medical billing companies, the HHS Office of Inspector General (OIG) noted a longstanding concern that percentage billing arrangements may increase the risk of upcoding. That does not make the model illegal, but it is a reason to audit coding regularly whatever you choose.

Also ask what the quoted fee leaves out. Setup fees, credentialing, patient statement printing, software licenses and early termination charges can change the total cost a lot.

A decision framework by practice size and situation

Use this as a starting point, not a rule.

The hybrid option. Many practices do not choose all or nothing. Common splits include keeping front-end tasks (eligibility, charge capture, patient collections) in-house while outsourcing claims follow-up and denial work. Others keep billing internal but hire a vendor to clear old A/R or cover a staff gap. If prior authorizations are a bottleneck, read why prior authorization takes so long before deciding who should own that work.

Questions to ask before you sign with a billing company

Treat vendor selection like hiring a key employee. Ask:

1. What exactly is in scope? Get a written list of tasks the vendor does and the tasks that stay with you.
2. Who will work my account? Ask about team size, experience in your specialty and whether any work is subcontracted.
3. What reports will I get, and how often? You want denial rates, days in A/R, collections by payer and aging buckets at least monthly.
4. Do I keep full access to my data? Make sure you own your data and can export it if you leave.
5. How do you handle coding questions? Providers should be asked, never overridden, on documentation issues.
6. What is your compliance program? Ask how they train coders, audit their work and handle errors.
7. How do I exit? Check notice periods, termination fees and how open claims are handled after you leave.

Because a billing company handles protected health information, HIPAA requires a business associate agreement (BAA) with it. The HHS Office for Civil Rights publishes sample BAA provisions you can share with your attorney. For your own safeguards, our HIPAA security risk assessment guide covers what to review.

This is not legal advice. Have a healthcare attorney review any billing contract before you sign.

How to measure either option

Whatever you choose, track the same handful of numbers every month so you can compare honestly:

• Days in A/R: how long, on average, it takes to get paid
• Denial rate: the share of claims denied on first submission
• Clean claim rate: the share of claims accepted without edits
• Net collection rate: what you collect compared with what you are contractually owed
• A/R over 90 days: money at risk of never being collected

If you outsource, ask for these in every monthly report and spot-check a sample of claims against the payer portals yourself. If you keep billing in-house, run the same reports from your practice management system. A good EHR or practice management system should produce them without custom work.

Where to start

If you are unsure which way to go, follow these 5 steps:

1. Pull 12 months of data. Collections, denial rate, days in A/R and A/R over 90 days.
2. Price your current in-house cost. Include salaries, benefits, software, clearinghouse fees and time the office manager spends on billing.
3. Get 3 written vendor quotes for the same scope, including all fees.
4. Run a pilot if you can. Some practices outsource 1 payer, 1 location or old A/R first and compare results over 90 days.
5. Decide, then review in 12 months. Put a calendar reminder to revisit the numbers.

Technology is also shifting the math. AI-assisted coding and claim scrubbing tools are being built into both EHRs and vendor platforms, which may change staffing needs over time. Our overview of AI for medical and dental practices covers where those tools help today.

The bottom line

Keep billing in-house when you have skilled, stable staff and value tight control. Outsource when you are small, short-staffed, growing quickly or already behind. A hybrid model often works best in between. Whichever path you choose, own your numbers: the practice that watches its denial rate and A/R every month gets paid, whoever is doing the work.

Sources

• eCFR / Cornell LII: 42 CFR 424.44, Time limits for filing claims — Medicare 1-calendar-year claim filing limit
• US Bureau of Labor Statistics: Medical Records Specialists — median pay and job outlook for billing and coding staff
• HHS OIG: Compliance Program Guidance for Third-Party Medical Billing Companies (63 FR 70138) — OIG concern about percentage billing arrangements and upcoding
• HHS: Sample Business Associate Agreement Provisions — BAA requirements for vendors handling PHI