CDT Code D0150: Comprehensive Oral Evaluation Billing Guide
The new-patient workhorse — and the code most likely to be reclassified when documentation doesn’t fit the CDT descriptor.
CDT code D0150 reports a comprehensive oral evaluation — new or established patient. It is the code billed at a new patient’s first visit, and in some established-patient scenarios where a comprehensive re-examination is clinically warranted.
D0150 pays meaningfully more than D0120 (periodic evaluation), so it matters to use the code correctly. It also matters not to overuse it: D0150 on every recall visit, or D0150 billed frequently on the same patient, is a pattern that carriers increasingly flag for utilization review.
What D0150 requires
The CDT descriptor for D0150 is “Comprehensive oral evaluation — new or established patient.” Per the CDT and the ADA, D0150 is used when the evaluation includes all of the following:
- Review of medical and dental history
- Evaluation of the patient’s overall health, oral hygiene, and dental status
- Evaluation and recording of hard and soft tissues
- Evaluation of existing restorations and prostheses
- Periodontal evaluation and charting
- Oral cancer screening
- Evaluation of the occlusion
- Caries risk assessment
- Treatment planning with documented findings and recommendations
A D0150 evaluation typically takes 30 to 60 minutes and produces a written treatment plan. An evaluation that skips periodontal charting, full hard and soft tissue evaluation, or occlusion review does not meet the D0150 standard and should be billed as D0120 (periodic) or D0140 (limited) as appropriate.
D0150 is not a longer D0120. It is a different evaluation — one that includes full periodontal charting, documented treatment planning, and complete tissue examination. Carriers can and do request the exam note to verify these elements.
When D0150 is appropriate
- New patient first visit — establishing a baseline for care
- Established patient with a significant gap (typically 3–5 years since the last comprehensive evaluation)
- Established patient with a major change in clinical status requiring full re-evaluation (e.g., returning after medical treatment, after trauma, or with new significant symptoms)
- Comprehensive treatment planning for major work (full-mouth rehabilitation, orthodontics, implant planning)
When D0150 is not appropriate
- Routine six-month recall for an established patient — this is D0120
- Problem-focused visit for a single concern — this is D0140
- Emergency visit for acute issue — this is D0140
- An evaluation that lacks one or more of the required comprehensive components
D0150 frequency limits
Most dental plans limit D0150 to once every 3 to 5 years for an established patient. New patients can bill D0150 at their first visit under nearly all plans. Billing D0150 repeatedly on the same established patient within a short window typically generates denials.
| Carrier Pattern | Typical D0150 Frequency Rule |
|---|---|
| New patient first visit | Allowed, first occurrence with the practice |
| Established patient | Once per 3 or 5 years, depending on plan |
| Transfer of care from another practice | Generally allowed as “new” to the billing practice |
| Same date as D0120 | Not payable together — D0150 supersedes |
Documentation that supports D0150
A D0150 claim that consistently holds up includes:
- Full medical history completed and reviewed
- Complete periodontal charting (six-point probing, recession, mobility, furcations)
- Hard and soft tissue exam documented in detail
- Oral cancer screening documented
- Occlusal evaluation documented
- Radiographs appropriate to the clinical scenario (FMX or bitewings/pano)
- Written treatment plan with prioritized findings and recommendations
Common D0150 denials
Frequency exceeded
Billing D0150 within 3–5 years of a previous D0150 on the same patient typically generates a denial or a downcode to D0120. Checking the patient’s history across the practice (not just in-practice) is challenging but important.
Documentation does not support comprehensive evaluation
If the exam note does not document periodontal charting, full tissue evaluation, and a written treatment plan, carriers may reclassify the claim as D0120 and pay the lower fee.
D0150 and D0120 on the same day
These codes are mutually exclusive on the same date of service. The comprehensive evaluation subsumes the periodic evaluation.
D0150 at every recall
Practices that bill D0150 at every recare visit rather than D0120 are flagged by carrier utilization analytics. This pattern generates pre-payment review letters requesting documentation, and in some cases broader practice-level audit.
D0150 vs. D0180
D0180 is the comprehensive periodontal evaluation — used for patients with periodontal disease or at significant periodontal risk. It includes everything D0150 includes plus additional periodontal-specific assessment.
Some plans reimburse D0180 at a higher rate than D0150; others pay them identically. Using D0180 when periodontal disease is present and fully documenting the periodontal components can be more appropriate than D0150 for periodontally involved patients.
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