D0240 Dental Code: Occlusal X-Ray Billing Guide

What D0240 covers

D0240 reports one intraoral occlusal radiograph. The film is larger than a periapical and lies flat against the biting surface; the patient bites lightly to hold it while the beam comes from above or below. The result is a wide top-down image of an arch segment, the palate, or the floor of the mouth.

The code is one image. If two occlusal films are taken, each is its own D0240 line.

When to bill D0240

Bill D0240 when the office takes an occlusal film for a specific diagnostic reason: the question is bigger than a single tooth but still needs intraoral detail. Common situations:

• A pediatric patient where an occlusal view captures developing or supernumerary teeth that a periapical cannot frame.
• A suspected cyst, abscess, or bony lesion whose extent a periapical cannot show.
• Localization of an impacted or displaced tooth, such as an impacted canine in a child.
• A salivary calculus in the floor of the mouth.
• Trauma, to read the extent of a jaw fracture in a segment of the arch.

Occlusal versus periapical, bitewing, and the series

These codes are separated by the view they capture, not by film count:

• A periapical (D0220 first, D0230 each additional) is a small film showing one or two teeth from crown to root apex plus the surrounding bone. A film aimed at the root and apex of a tooth is a periapical, not D0240.
• A bitewing shows the crowns and contact areas of the upper and lower back teeth in one view, for interproximal decay and crestal bone. The codes are D0270 (one), D0272 (two), D0273 (three), and D0274 (four).
• An occlusal film (D0240) is a wide film on the biting plane that captures a broad top-down segment of an arch, the palate, or the floor of the mouth. It covers area a periapical cannot frame.
• A complete series (D0210) is a whole-mouth survey of periapical and bitewing images.
• A panoramic (D0330) is a single extraoral image of both arches.
• Other extraoral films, taken with the sensor outside the mouth, have their own codes: a 2D extraoral projection is D0250, and an extraoral posterior image is D0251.

The usual error is coding an occlusal film as a periapical, or the reverse, because the front desk picked a generic “X-ray” entry instead of the code for the image taken. Keep D0240 as its own clearly labeled entry in the PMS.

Top reasons D0240 gets denied

1. Annual radiograph benefit exhausted. Most plans cap radiographs by a dollar amount or a film count for the year, pooled across all image types. An occlusal film taken after a full series or a heavy same-day set can hit the cap and fall to patient responsibility. That is a benefit limitation, not a coding error.
2. No documented reason. Because occlusal films are uncommon, some plans want a narrative showing the diagnostic need. Without one, the carrier can read the film as routine and deny it, especially if a periapical of the same area is also on the claim.
3. Read as duplicating a periapical. When a D0240 and a D0220 image of overlapping teeth appear on the same date, some plans pay one and deny the other as the same information twice. A narrative separating the two diagnostic questions helps.
4. Remap to a complete series. When the total fee of the individual intraoral films on one date reaches the plan’s D0210 allowable, some carriers remap the group to a full series and pay the series rate, which can also consume the patient’s multi-year FMX frequency. This is a per-payer rule.

Documentation that supports the claim

The claim needs:

• A date of service matching the exposure date.
• The arch or region imaged, when the carrier asks.
• A short narrative naming the diagnostic reason for the occlusal view whenever the film is anything other than a routine, expected image.

For the patient record, document:

• Why an occlusal view was chosen over a periapical (the area or structure a periapical could not frame).
• The findings read off the film.
• Any treatment planning that depended on it.

An occlusal film with no charted reason looks like a screening image the plan will question. One line stating the clinical question is usually enough.

Example case

An eight-year-old presents for evaluation of a palatal swelling behind the upper front teeth. A periapical cannot frame the area, so the dentist takes a maxillary occlusal film and finds a supernumerary tooth (a mesiodens) and a small associated radiolucency.

Billing steps:

1. Verify the patient still has radiograph benefit for the year, since the cap pools across image types.
2. Code D0240 for the occlusal film on the same claim as the evaluation.
3. Add a one-line narrative: occlusal view taken to localize a suspected supernumerary tooth and assess the associated lesion, which a periapical could not frame.
4. Attach the image if the plan requests it or if a referral or surgical claim will reference it. Link it to the D0240 claim line, not just the patient record.