D2391 Dental Code: The Silent Profit Killer & How Smart Dentists Are Fighting Back

April 03, 2025
Written by: Jordon Comstock

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Insurance Companies Are Robbing You Blind—Here’s How to Take Control

Let’s talk about D2391—the code for a single-surface posterior resin composite filling.

You fix a cavity, bill insurance, and… BAM! PPOs cut your fee so low you’d make more money selling Girl Scout cookies.

Meanwhile, your front desk is stuck:
On hold with an insurance company.
Re-filing claims for “adjustments.”
Explaining to confused patients why their “insurance doesn’t cover that.”

Sound familiar?

Fact: The average dental practice writes off $35,000+ per month in PPO discounts.
Fact: That’s $420,000 per year—GONE.

❌ Why are you letting PPOs tell you how much your work is worth?
❌ Why are you waiting 30-90 days to get paid pennies?
❌ Why are you stressing over case acceptance when patients NEED treatment?

Smart practice owners are DONE with this game. They’re growing their practice with membership patients who pay directly.

Keep reading to learn how you can:
Ditch PPOs & build a thriving membership plan.
Stop chasing insurance & start generating predictable, recurring revenue (MRR & ARR).
Turn filling patients into HIGH-VALUE, long-term members.

Let’s dive in.


 What is the D2391 Code & Why Are You Losing Money on It?

What is D2391?

D2391 is the ADA code for a resin-based composite (tooth-colored) filling on one surface of a posterior tooth.

This is one of the most common restorative procedures in dentistry.
You do it every day.
And PPOs are massively underpaying you for it.

The PPO Problem: You’re Getting Paid Less Than You Deserve

What D2391 Should Be Worth: $150 – $250
What Most PPOs Pay: $70 – $110

That means for every 100 fillings you place, you’re losing $8,000 – $12,000 per month.

The True Cost of PPO Write-Offs:

You see 300 D2391 cases a month
PPOs underpay by $80 per case
$24,000 lost PER MONTH
$288,000 PER YEAR—GONE!

And that’s just one procedure. Multiply this across crowns, implants, and perio treatments, and you’ll see why most practices struggle with profitability.

So, what’s the fix? Stop relying on PPOs & start offering a membership plan.


 How a Membership Plan Turns Filling Patients Into Revenue Machines

The Problem:

Most uninsured patients hesitate on treatment because:
They don’t know what it will cost.
They assume they can’t afford it.
They think, “It’s just a small cavity—I’ll wait.”

And insurance patients? They follow whatever their PPO covers—even if it’s NOT the best treatment for them.

The Solution? A Membership Plan.

Instead of relying on PPOs, why not sign patients up for a direct-pay membership plan?

How a Membership Plan Works for Filling Patients:
✅ Patients pay a low monthly or annual fee for preventive care.
✅ They get discounts on restorative procedures (like D2391, crowns, etc.).
✅ You generate predictable monthly recurring revenue (MRR).
No insurance headaches. No claim denials. Just direct payment.

Why This Works:
✔️ Membership patients spend 2X-4X more than PPO patients.
✔️ They stay LOYAL because they’re financially committed.
✔️ Your practice has recurring revenue—NO MORE rollercoaster months.

How much could you make?

If you sign up just 400 patients at $30/month…
That’s $12,000/month in guaranteed revenue (MRR).
That’s $144,000/year in additional revenue (ARR).

And that’s BEFORE they say yes to fillings, crowns, or other treatments!

Want an easy way to manage memberships? Check out BoomCloud™ Click Here


Epiphany Bridge: How One Dentist Scaled to $500K in Recurring Revenue

Dr. Alex Carter was tired of PPOs controlling his income.

What He Did:

✔️ Launched a BoomCloud™ membership plan for uninsured patients.
✔️ Included discounts on restorative care in the plan.
✔️ Marketed the plan through direct mail, social media, & in-office promotions.

Results in 12 Months:

1,500 patients joined his membership plan.
MRR hit $42,000/month.
ARR grew to $504,000/year.

Now, Dr. Carter has predictable revenue, loyal patients, and NO PPO headaches.

Want the same results? Check out BoomCloud™


Final Thoughts: Stop Letting PPOs Control Your Income

Here’s Your 3-Step Plan to Take Back Control:

Step 1: Identify Your PPO Write-Offs.
Find out how much money you’re losing every month.

Step 2: Launch a Membership Plan for Patients Needing Restorative Care.
Give them affordable, predictable care WITHOUT insurance restrictions.

Step 3: Use BoomCloud™ to Track & Grow Your Membership Program.
Automate billing, renewals, and revenue tracking.

More revenue. More patient loyalty. Less stress.

Ready to build a membership plan that scales? Check out BoomCloud™ and start making your practice insurance-free.

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vision-membership-plan-ebook Creating a patient membership plan is the smartest strategy to implement in your practice. You will increase patient satisfaction & loyalty, Increase predictable recurring revenue & increase sales!

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Jordon Comstock

Author Bio

Jordon Comstock is the Founder & CEO of BoomCloud™, a software that allows practice, clinic & spa owners to build, manage and scale a membership program. This helps practice & clinic owners to create recurring revenue & improve loyalty via membership programs. Jordon is passionate about Music, Hawaii, Healthcare businesses like: dentistry, optometry, med spas and massage spas. Schedule a demo of BoomCloud™ and learn how membership programs can improve your business. Here are more dental books to improve your practice

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