D0277 Dental Code: Vertical Bitewings Billing Guide

What D0277 covers

D0277 reports a vertical bitewing set of seven to eight films. A bitewing shows the crowns and contact areas of the upper and lower back teeth in one film. Turning the film vertical trades some side-to-side width for height, so each image captures more of the alveolar bone above and below the contacts. That is why the vertical set is a periodontal film: the diagnostic target is crestal and alveolar bone level, not only decay between the teeth.

The code is the whole seven-to-eight-image set on one line, billed as quantity 1, not one line per film.

It does not cover:

• A single horizontal bitewing. That is D0270.
• Two, three, or four horizontal bitewings. Those are D0272, D0273, and D0274.
• A complete intraoral series of periapicals and bitewings. That is D0210.
• A periapical showing one tooth to the root apex. The first is D0220 and each additional is D0230.
• A panoramic image. That is D0330.

When to bill D0277

Bill D0277 when the office takes a full vertical bitewing set of seven or eight images, usually because bone level is the clinical question.

Typical cases:

• A periodontal patient where the clinician is reading and tracking crestal bone loss.
• A perio recall or reevaluation where horizontal bitewings would not show enough bone height.
• A patient whose posterior bone level needs documenting for a periodontal diagnosis or treatment plan.

Do not bill D0277 for:

• A standard caries-screening set of four horizontal films. That is D0274.
• Fewer horizontal films. Match the count: D0270, D0272, or D0273.
• A whole-mouth survey of periapicals and bitewings. That is D0210.

Vertical versus horizontal, and versus the series

Orientation and count are the two axes that set D0277 apart from its neighbors, and a clean claim needs both right:

• Orientation. Horizontal bitewings (D0270 through D0274) are framed for interproximal decay and the crest. Vertical bitewings (D0277) are turned tall to read more bone height for periodontal assessment.
• Count. The horizontal codes are chosen strictly by film count, one through four. D0277 is defined as seven to eight images. There is no “vertical bitewing, single film” code. A lone vertical film is still billed in the horizontal-count family by number of images.

And keep the series straight: D0210 is a comprehensive survey meant to show every tooth, its roots, the periapical areas, the interproximal areas, and the bone. D0277 is a posterior bone-level set, not a whole-mouth survey, even though several plans treat it as a series for payment.

How carriers treat D0277 for frequency

Because the vertical set sits between “bitewings” and “complete series” in how payers think about it, the frequency question is the one to answer at verification. Ask the carrier two things: what interval applies to D0277, and whether a D0210 or D0330 already on file inside the window will block it.

Top reasons D0277 gets denied or repriced

1. Counted against the FMX frequency. A recent complete series (D0210) or panoramic (D0330) sits inside the plan’s window and the carrier applies it to D0277, so the vertical set denies on frequency. This is the most common issue and it follows directly from carriers treating the set as a series.
2. Repriced to the series allowable. Some plans pay D0277 at the D0210 rate rather than the sum a large image set might suggest, then start the multi-year series clock. That reads like a downcode on the EOB but is benefit design.
3. Wrong quantity. D0277 is the whole set on one line, quantity 1. Billing it per film gets rejected.
4. No periodontal justification. A vertical set on a patient with no charted periodontal reason can pend, because the plan expects the bone-level question that justifies the vertical orientation over a routine four-film set.

Documentation that supports the claim

The claim needs:

• Date of service.
• Indication that a vertical set of seven to eight images was taken, at quantity 1.
• A brief periodontal narrative when the plan asks why the vertical set was chosen over horizontal bitewings.

For the patient record, document:

• The periodontal reason for reading bone level (active perio, reevaluation, treatment planning).
• The bone findings read off the films.
• The date of the last complete series or panoramic, so a frequency question answers itself.

Keep the prior-imaging dates where the billing team can see them. Most D0277 denials are frequency denials tied to a series already on file, and those resolve fast when the history is in front of you.

Example case

A 58-year-old established patient with generalized moderate periodontitis returns for a periodontal reevaluation. The clinician needs current bone levels across the posterior segments and takes a vertical bitewing set of eight images.

Billing steps:

1. Verify how the plan treats D0277 and confirm no complete series (D0210) or panoramic (D0330) inside the plan’s window will block it.
2. Code D0277 at quantity 1 on the date of service, not one line per film.
3. Add a short narrative noting the periodontal reevaluation and the need to read alveolar bone level.
4. Expect one of two outcomes: payment at the vertical-set benefit, or a reprice to the series allowable that also starts the multi-year FMX clock. Post what the plan allows and set the patient’s frequency expectations for the next series.

What to get right in your PMS

1. Keep D0277 separate from the horizontal bitewing codes. It is a distinct set, not a bigger D0274. A generic “BWX” entry is how a vertical set gets miscoded.
2. Bill the set as one line at quantity 1. Seven to eight images is one D0277, never one line per film.
3. Treat the frequency check as an FMX check. Because many plans count D0277 against the series window, verify recent D0210 and D0330 history, not just the bitewing history.
4. Attach a periodontal reason. The vertical orientation is the justification, and a chart note naming the bone-level question supports it.
5. Read repricing off the EOB, do not change the code. If a plan pays the set at the series allowable, submit D0277 for the images taken and post what the plan allows.