Dental Billing and Coding: What It Covers and What an Office Can Hand Off

Introduction

Dental billing and coding are two jobs that usually sit on the same desk. Coding is translating what the dentist did into the CDT procedure codes that insurance plans recognize. Billing is everything that turns those codes into money: verifying coverage, building and sending the claim, posting the payment, following up on what did not pay, and billing the patient for the remainder. The two are linked, because a coding error becomes a billing problem the moment the claim goes out, but they are not the same skill, and they are not equally easy to hand to an outside vendor.

This guide explains what each job involves, where the common errors are, which steps a dental office can outsource and which it should keep. It closes with exactly what Teero does and does not do in this area.

Key Takeaways

• Coding uses the CDT code set, maintained by the American Dental Association and updated each year. The code has to match the procedure performed and the documentation in the chart.
• Billing is a chain of steps: verification, claim submission, payment posting, aging and denial follow-up, secondary claims, and patient billing. Each step depends on the one before it.
• Coding and claim submission depend on clinical context, so they belong with the office. Verification, posting and follow-up are process work that can be handled by a vendor.
• Teero covers verification before the visit and posting, aging, denials, secondary claims and appeals after the claim goes out. It does not code and does not submit claims.

What Dental Coding Involves

The CDT code set

Every procedure on a dental claim carries a CDT code: a "D" followed by four digits, grouped by category such as diagnostic, preventive, restorative, periodontics and prosthodontics. The set is revised annually, so a code that was valid last year may have been deleted, split or renumbered. Offices that do not update their fee schedule and procedure templates each January send claims that are denied on arrival.

Matching the code to the chart

The code has to reflect what was actually done and what the clinical notes support. A crown coded without the radiograph and narrative the plan requires will be reviewed or denied. Coding a procedure at a higher level than the documentation supports is the classic compliance risk in dental billing, and it is the reason coding decisions stay with the clinical team.

Where coding errors come from

Most are not fraud; they are template drift (a procedure button mapped to an old code), incomplete notes, or a front desk guessing at a code the dentist did not specify. Each one turns into a rejection, a denial or a downgraded payment weeks later.

What Dental Billing Involves

Before the visit: verification

Confirming the plan is active and pulling the benefits that decide what the claim can pay: category percentages, remaining maximum, deductible, frequency limits, waiting periods and downgrades. This sets the patient estimate and prevents coverage denials.

The claim: build and submit

The coded procedures, patient and subscriber details, and required attachments are assembled in the practice management software and sent to the payer, usually electronically. This is the step where coding and billing meet, and where a clean claim pays without anyone at the payer reading it.

After the claim: posting

When the EOB or ERA comes back, the payment is posted to the right patient and procedure, the contractual adjustment applied according to the office's write-off rules, the patient portion recorded, the EOB attached to the claim, and the claim closed or the balance moved to secondary or patient responsibility.

After the claim: aging, denials and secondaries

Claims unpaid past about 30 days are followed up with the payer. Denials are read, classified and either corrected and resubmitted or appealed before the deadline. Underpayments are checked against the fee schedule. Secondary claims go out with the primary EOB once the primary pays.

After insurance: patient billing

Whatever insurance did not cover is billed to the patient by statement, reminder and payment link, and the payment is matched back to the ledger.

What to Keep In-House and What to Hand Off

The dividing line is clinical context. Coding and claim submission need someone who can read the chart, ask the dentist a question and decide what to attach. That is the office's team. Verification, posting and follow-up need consistency and time more than clinical judgment, and they are the steps that slip first when the front desk is busy.

Vendors split along this line too. Full-service billing companies take the whole chain including submission; eAssist, Dental Claim Support and Wisdom publish that model on their own sites at $1,400 a month (Wisdom: $1,397) under $40,000 in monthly collections, with percentage bands above that, as of September 2026. Teero takes the other side of the line. Its insurance verification service delivers free eligibility checks and $5 full benefits breakdowns into the practice management software a week ahead of the schedule, with an $800 monthly minimum and no contract. Its payment posting and insurance aging service posts every insurance payment line by line inside Dentrix, Open Dental, Eaglesoft or Curve, follows up on claims over 30 days old, classifies and corrects or appeals denials, checks underpayments against the fee schedule, sends secondary claims when a primary pays, and flags denials that need the office's decision inside the PMS with the reason, the payer's explanation, the appeal deadline and a recommendation. It starts at 2% of payments posted with volume discounts, an $800 monthly minimum, no contract and no software licence. Teero does not code treatment and does not submit claims; both stay with the office, by design.

Frequently Asked Questions

Is dental coding the same as medical coding? No. Dental claims use CDT codes; medical claims use CPT and ICD codes. Some dental procedures can be billed to medical insurance, but that is a separate process with its own code sets.

Can a dental office outsource coding? Some full-service billing companies review or assign codes as part of submission. Teero does not; coding decisions stay with the office's clinical team.

Where does payment posting fit into dental billing? It is the step right after the payer responds. Accurate posting is what makes the aging report, the patient balances and the collections numbers true, and it is one of the steps most often outsourced.

Conclusion

Coding decides what the claim says; billing decides whether and when it gets paid. Keep the clinical decisions, coding and submission, with the people who can read the chart, and treat verification, posting and follow-up as process work that has to happen every day whether or not the front desk has time. Teero handles those process steps and leaves coding and claim submission with the office. Scope and pricing are on Teero's payment posting and insurance aging page.