What should the D0340 chart note include?
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Cephalometric radiograph. RMH: Medical history reviewed/updates Image order/necessity: Clinical signs/symptoms/risk factors supporting image Patient consent/radiation discussion: Benefits/risks reviewed and consent Image quality: Diagnostic quality or retake reason Interpretation: Findings or no significant findings Image labels/storage: Patient/date/tooth or area labels; linked to note/claim if needed Indication: Indication/diagnosis Orthodontic evaluation. Orthognathic surgery planning. Growth assessment. Sleep apnea evaluation. Other: Other Technique: Technique Digital cephalometric unit. Lateral view. Patient positioned in cephalostat. Frankfort plane horizontal. Image diagnostic quality. Radiographic Findings: Radiographic findings Skeletal Analysis: ANB angle: ANB angle SNA: SNA SNB: SNB Facial angle: Facial angle Mandibular plane angle: Mandibular plane angle Dental Analysis: Upper incisor inclination: Upper incisor inclination Lower incisor inclination: Lower incisor inclination Overjet: Overjet Overbite: Overbite Soft Tissue Analysis: Lip position: Lip position Nasolabial angle: Nasolabial angle Airway: Airway Classification: Classification Skeletal class: Skeletal class Dental class: Dental class Summary: Findings discussed: Findings reviewed with patient/guardian. NV: Next visit
What documentation is required for D0340?
A defensible D0340 chart note moves past "ceph taken" and ties the image to the diagnosis or the orthodontic/surgical plan it supports. Required components:
- Indication — the specific clinical reason: ortho records, growth assessment, orthognathic planning, airway/sleep workup, or mid-treatment progress check. A bare "ortho" is weaker than "comprehensive ortho records, Class II skeletal pattern suspected on clinical exam."
- Patient-of-record context — clinical signs/symptoms/risk factors that triggered the image. Carriers (and auditors) want a clinical narrative, not a checkbox.
- Consent / radiation discussion — benefits and risks reviewed; pediatric patients should reflect ALARA and a parent/guardian conversation.
- View — lateral (most common) vs frontal (PA). State whether it was a single image or part of a records set.
- Technique — digital cephalometric unit, cephalostat positioning, Frankfort plane horizontal, lips in repose (or function as required), exposure factors per ALARA.
- Diagnostic quality — explicitly stated. If a retake was needed, document the reason.
- Interpretation — radiographic findings in your own words. "No significant findings" is acceptable when true, but skeletal/dental analysis values do most of the documentation work for ceph.
- Skeletal analysis — ANB, SNA, SNB, facial angle, mandibular plane angle (FMA / SN-MP), or whichever analysis the practice uses (Steiner, Ricketts, McNamara, Tweed). The CDT 2018 revision makes this part of the code; omitting it weakens both the clinical record and the claim.
- Dental analysis — upper/lower incisor inclination (U1-SN, IMPA), overjet, overbite.
- Soft tissue analysis — lip position, nasolabial angle, airway dimension when relevant to the plan.
- Classification — skeletal class (I/II/III) and dental Angle class. State the cephalometric basis ("ANB 5.5° → skeletal Class II").
- Image labels / storage — patient, date, view; linked to the orthodontic record or claim attachment.
- Findings discussed with patient/guardian — particularly important for medical-necessity ortho or surgical cases.
- Operator initials and provider signature — required per most state radiation rules and many carrier policies.
For pediatric and adolescent patients, document growth status (cervical vertebral maturation or skeletal age proxy) when it informs treatment timing. For airway/sleep cases, document the airway measurement and how it links to the appliance plan.
Why does D0340 get denied?
The most common reasons D0340 is denied, downgraded, or audited:
- No orthodontic benefit on the plan — the single most common denial. The image was clinically appropriate, but the patient simply has no ortho coverage and the carrier rejects D0340 as not a covered service.
- Cosmetic exclusion — the carrier classifies the orthodontic case as cosmetic; the entire records set including D0340 is denied along with D8080.
- Frequency / lifetime limit exceeded — patient or a prior practice already used the ortho records allowance.
- Missing prior authorization — many plans require pre-auth for all orthodontic codes, including the records phase. Submission without authorization is auto-denied.
- Same-case bundling — repeat ceph during active treatment denied as included in the comprehensive case fee (D8080/D8090).
- No medical necessity / no qualifying malocclusion — Medicaid and medical-cross-coded claims denied for failing to meet HLD index thresholds or ICD-10 medical necessity criteria.
- Adult patient on a dependent-only ortho rider — code denied for age.
- Documentation does not support analysis was performed — under the CDT 2018 descriptor, D0340 includes "acquisition, measurement and analysis." A note that says only "ceph taken" without skeletal/dental measurements invites a downgrade or recoupment on audit.
- Wrong code billed — a panoramic image submitted under D0340 (should be D0330), or a CBCT submitted under D0340 (should be D0364–D0368).
- Image not retained / not retrievable on records request — carriers can recoup payment when the image cannot be produced for review.
What do practices ask about D0340?
Can the cephalometric tracing and analysis be billed separately from D0340?+
No. The CDT 2018 revision changed the descriptor to "acquisition, measurement and analysis," meaning the tracing and cephalometric analysis are bundled into D0340. There is no separate code for the tracing. Practices that previously billed analysis under a by-report or evaluation code should not do so — it is an audit risk and is explicitly subsumed by D0340.
How often can D0340 be billed during a comprehensive orthodontic case?+
Most carriers reimburse D0340 once at the orthodontic records phase. Some plans allow a second D0340 for final/debond records, and a few permit a mid-treatment progress ceph. Repeat cephs during active treatment are commonly denied as included in the comprehensive case fee (D8080/D8090) unless the plan's ortho rider explicitly allows them. Verify against the patient's specific benefits.
Is D0340 covered by medical insurance for orthognathic surgery cases?+
Sometimes. For patients with skeletal malocclusion, obstructive sleep apnea, cleft palate, or syndromic craniofacial diagnoses, D0340 may be reimbursable through medical insurance with the appropriate ICD-10 diagnosis. Cross-coding to a medical code (often CPT 70350 for the radiograph) is plan-specific and typically requires pre-authorization plus a letter of medical necessity from the surgeon and orthodontist.
Can D0340 be billed alongside D0330 (panoramic) on the same day?+
Yes. The pano and the ceph are separate images of separate views and are routinely billed together as part of an orthodontic records set. The ADA recognizes them as distinct procedures. Carrier limits, however, may pool both within a shared "orthodontic diagnostic records" allowance — most plans pay both, but they may draw from a combined records benefit rather than from your two separate fees.
What if the practice acquired a CBCT and reconstructed a 2D ceph from the volume — is that D0340?+
No. The correct code follows the actual scan acquired, not the derived 2D image. A CBCT volume is reported under D0364–D0368 based on field of view; the reconstructed 2D ceph is part of the CBCT and is not separately billable as D0340. If a separate 2D cephalometric image was actually acquired in addition to the CBCT, that one image may be billable as D0340 where the carrier allows.
Why was D0340 denied as cosmetic?+
When a patient has no orthodontic rider — or when the carrier classifies the underlying ortho case as cosmetic — the entire records set, including D0340, is typically denied. The image is denied not because it lacked clinical merit but because the orthodontic treatment it supports is not a covered benefit. Appeal options usually require demonstrating medical necessity (severe malocclusion, OSA, orthognathic indication) and submitting under medical insurance.
Does D0340 require a written interpretation in the chart?+
Yes. Because the CDT 2018 descriptor includes "measurement and analysis," the chart must show that an analysis was performed — not just that an image was taken. At minimum, document the skeletal classification (ANB or equivalent), key dental measurements (overjet, overbite, incisor inclinations), and a soft tissue or airway note when clinically relevant. A note that says only "ceph taken" is the most common audit weakness on this code.