What is dental billing?
Dental billing is the process of turning the treatment a dentist provides into payment from insurance carriers and patients. It covers everything from verifying a patient's insurance before the appointment, to coding procedures with CDT codes, submitting claims, posting payments, following up on unpaid claims and collecting patient balances. Together these steps make up the dental revenue cycle.
When any step is rushed or skipped, revenue leaks out of the practice: claims get denied, payments arrive late, patients receive unexpected bills and accounts age past the point where they can be collected.
How dental billing differs from medical billing
Although both involve insurance claims, dental and medical billing follow different rules:
- Code sets: dental claims use CDT codes; medical claims use CPT/HCPCS procedure codes paired with ICD-10 diagnosis codes.
- Claim forms: dental claims are filed on the ADA Dental Claim Form or electronically as an 837D; medical claims use the CMS-1500 or 837P.
- Benefit structure: dental plans typically have low annual maximums, strict frequency limits and coverage tiers (preventive, basic, major), unlike most medical plans.
- Documentation: dental payers routinely require radiographs, periodontal charts and narratives to approve major services.
Practices that perform oral surgery, sleep apnea appliances or trauma care often leave money on the table by billing only dental insurance. Medical cross-coding can make the patient's medical plan the primary payer for qualifying procedures.
CDT codes explained
Current Dental Terminology (CDT) is the code set maintained by the American Dental Association and required under HIPAA for reporting dental procedures. Codes begin with "D" followed by four digits and are grouped into categories such as diagnostic (D0100–D0999), preventive (D1000–D1999), restorative (D2000–D2999), endodontics, periodontics, prosthodontics, implants, oral surgery and orthodontics.
Because CDT is revised every year, billing teams need to update their code sets and fee schedules each January. Using a deleted code or the wrong code for the documented treatment can lead to denials, downgrades or audit risk.
Top reasons dental claims are denied
- Frequency limitations exceeded — e.g., a second prophylaxis or bitewing series within the plan's allowed window.
- Missing attachments — no pre-op X-ray for a crown, no perio chart for scaling and root planing.
- Eligibility issues — terminated coverage, wrong subscriber details or coordination-of-benefits problems.
- Waiting periods and missing-tooth clauses — common with new plans and prosthetic treatment.
- Coding errors — wrong tooth number, surface or outdated CDT code.
- Timely filing — claims or appeals submitted after the payer's deadline.
Nearly all of these are preventable with thorough benefits verification and a consistent claim-scrubbing process before submission.
Dental billing KPIs every practice should track
Collection rate
The share of collectible production (after contractual adjustments) that the practice actually collects. A falling collection rate is often the first sign of a billing problem.
Days in A/R
How long, on average, it takes to get paid after a procedure. Rising days in A/R point to slow submission or weak follow-up.
First-pass claim acceptance
The percentage of claims paid on first submission without rework. This measures how clean your claims are going out the door.
Denial rate by reason
Tracking denials by cause shows exactly where the process is breaking — verification, coding, documentation or filing.
A/R over 90 days
Balances older than 90 days are much harder to collect. Keeping this bucket small protects your cash flow.
How to choose a dental billing company
Before you outsource, ask any dental billing partner:
- Do you specialize in dental billing, and do you understand medical cross-coding?
- Will you work inside our current practice management software?
- Will you sign a Business Associate Agreement and explain your HIPAA safeguards?
- What reports will we receive, and how often?
- Who is our point of contact, and how quickly do they respond?
- Are there long-term contracts or setup fees?
At Provider Concerns Solutions, we start with a free dental billing review so you can see exactly where your revenue is going before making any commitment.