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A claim is a structured request for payment sent from your professional entity to a payer, describing who was seen, by whom, for what, and, in dentistry; exactly where in the mouth. Electronically it is an X12 837D transaction. This step walks one visit all the way from the schedule to an accepted claim.

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What Bluebird did

Mrs. Alvarez, 46, booked as a new patient. The front desk verified eligibility two days before the visit and again at check-in: coverage active, $$1,500 annual maximum untouched, preventive covered at 100%, no waiting periods. Dr. Okafor did a comprehensive exam and radiographs, the hygienist a prophylaxis, and Dr. Okafor placed a one-surface composite on a lower molar and treatment-planned a crown on another. The biller entered charges that afternoon, the scrubber flagged a missing tooth surface on the composite line, the biller fixed it, and the claim went out that evening, with a predetermination for the crown right behind it. A 999 came back in minutes and a 277CA the next morning, both clean.

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The seven stages of one claim

1

Verify eligibility, and the plan design (270/271)

Before the visit, your system sends a 270 eligibility inquiry and the payer returns a 271 response: is coverage active on the date of service, what plan, what deductible remains.Dental verification has to go further than “active,” because plan design determines what you collect: remaining annual maximum, coverage tiers (the “100/80/50” skeleton), frequency history (a prophylaxis already used this period will not pay again), missing tooth clause, waiting periods, and downgrade behavior. Do the 270/271 twice, at scheduling and at check-in, and save the 271 response; it is your evidence in an appeal. See Verify eligibility and benefits and Bill dental claims.
2

Collect at the point of care

The patient’s share under the coverage tiers, plus anything you know exceeds the remaining maximum. Money collected before the patient leaves is money you don’t chase for 90 days. See Deductibles, coinsurance, and patient balances.
3

Document the visit

The dentist records findings, radiographs, periodontal charting, and the treatment plan in the PMS. The DSO may provide the system, but the clinical record belongs under the practice’s professional control.Documentation is also the substrate for everything downstream: the code must be supported by the chart, the radiographs double as attachment material, and in an audit the record is the only thing that matters. See Billing compliance: the lines you never cross.
4

Code the encounter

Dental claims carry two kinds of data doing two different jobs:
  • CDT codes: five characters consisting of a “D” and four digits; they identify what you did
  • Tooth number, surfaces, and quadrant/arch designations say where
ICD-10-CM diagnosis codes ride along where the payer requires them; many Medicaid dental programs do, but anatomy, not diagnosis, is dental’s load-bearing detail. For Mrs. Alvarez’s visit: an evaluation code from the diagnostic series, radiograph codes, a prophylaxis from the preventive series, and the composite; D2391, resin-based composite, one surface, posterior, with the tooth number and surface on the service line.At launch, trust your dentist for the code selection itself. What you need to know is that codes must be supported by the chart, that the CDT rolls every January 1 so the tables must be current for the date of service, and that assigning codes is the PC’s responsibility, not the DSO’s. See CDT & the 837D.
5

Send the attachments and the predetermination

Two dental-specific moves happen before or alongside submission.Attachments. Dental payers routinely demand radiographs, perio charts, and narratives before adjudicating crowns, scaling and root planing, implants, and buildups. The current mechanism is proprietary: upload the image to NEA FastAttach (or your clearinghouse’s attachment service), get back an NEA number, and place that number in the claim’s remarks so the payer can retrieve it.1 Sending a claim that will need an attachment without one buys a request-for-information cycle that costs weeks. A HIPAA-standard attachment transaction (X12 275) becomes mandatory in May 2028.2 See Dental attachments.The predetermination. For the crown Dr. Okafor treatment-planned, Bluebird submitted a predetermination using an 837D marked as a predetermination request and a radiograph attached through an NEA number. The payer returns an estimate that the patient can review before treatment. A predetermination is not a guarantee because final adjudication uses eligibility, the remaining maximum, and frequency limits on the date of service.3 Preauthorization is different: some payers, particularly Medicaid dental plans and DHMOs, require approval before specified procedures are payable. See Get predeterminations.
6

Enter charges, scrub, and submit the 837D

The biller enters the charges. The scrubber, in the PMS, the clearinghouse, or both; checks the claim against payer-specific edits before it goes out: valid current-year CDT codes, tooth and surface data present and consistent, NPI and taxonomy alignment, attachment reference present where the payer always wants one.Scrubber rejections are free. Payer denials cost you 30 to 60 days. Fix everything the scrubber flags. See Submit clean claims.The 837D identifies the billing provider (the PC, its Type 2 NPI, EIN, and address), the rendering dentist (Dr. Okafor and her Type 1 NPI), the subscriber and patient, and the claim. Each procedure has a service line with its CDT code, charge, units, and any applicable tooth, surface, or oral-cavity information. See The 837: how claims are told to payers and 837 file anatomy.
7

Read the acknowledgments

Several come back, and they are not the same thing.A 277CA rejection is not a denial. The claim never entered adjudication, no determination was made, and, critically, it usually does not stop the timely filing clock. Fix and resubmit the same day. See X12 transaction sets.

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Rejection vs denial, learn this now

This distinction confuses new billers for months, and getting it wrong wastes appeals on claims that were never adjudicated. Step 11 explains why downgrades, frequency limits, and exhausted maximums can produce zero or reduced payments without being claim rejections or true denials. See Claim denials, explained.

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The eight things that reject first claims

New groups reject on the same short list, and almost all of it is enrollment data rather than clinical content:
  1. Billing provider NPI not recognized, EDI enrollment isn’t complete for that payer
  2. Legal name mismatch between the W-9, the EIN letter, NPPES, and the claim
  3. Taxonomy mismatch between what’s on the claim and what you enrolled with
  4. Rendering dentist not credentialed or not linked to the group contract
  5. Service date before the dentist’s effective date
  6. Subscriber ID wrong, transposed digits, or the member ID without the alpha prefix
  7. Missing required preauthorization on a Medicaid or DHMO service that needed one
  8. Tooth or surface data missing, or inconsistent with the payer’s history, which trips duplicate and frequency flags
Note that six of the eight trace back to Steps 6 and 8. First-claim problems are usually enrollment problems.

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Test before you go live

Ask your clearinghouse whether the payer supports a test submission, and send one claim before sending a full batch. An accepted test claim provides evidence that the EDI enrollment, NPI, taxonomy, legal name, and effective date are configured correctly.

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Your artifact from this step

  • One claim accepted at 277CA
  • One predetermination submitted for the treatment-planned crown, attachment included
  • A documented rejection-resolution loop your biller can repeat
  • Confirmed EDI connectivity to payer #1
  • A saved 271 eligibility response attached to the encounter

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Checklist

  • Eligibility verified twice and the 271 response saved
  • Plan design captured: remaining maximum, frequencies, downgrade behavior
  • Patient share collected at the point of care
  • Encounter documented before charges entered
  • CDT codes assigned by the dentist, with tooth and surface data on every line that needs it
  • Attachment uploaded and reference number on the claim where required
  • Predetermination submitted for the crown
  • Scrubber run and all edits cleared
  • 837D submitted
  • 999 received and clean
  • 277CA received and shows accepted
  • Any rejection corrected and resubmitted the same day

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Next

Step 11: Read your first 835 and get paid

The remittance arrives, including a downgrade, and the money lands.

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Sources

  1. Vyne Dental, FastAttach; GEHA, NEA FastAttach payer instructions; Open Dental, claim attachments documentation.
  2. Administrative Simplification: Adoption of Standards for Health Care Claims Attachments Transactions and Electronic Signatures, 91 Fed. Reg. 14350 (Mar. 24, 2026), compliance May 26, 2028. Federal Register.
  3. ADA, Pre-authorizations and pre-treatment estimates.
Last modified on August 21, 2026