D0277 Dental Code: Vertical Bitewings Billing Guide

What D0277 covers

D0277 reports a vertical bitewing set of seven to eight films, billed on one line at quantity 1, not one line per film.

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 makes the vertical set a periodontal film: the diagnostic target is crestal and alveolar bone level, not only decay between the teeth.

It does not cover:

• A single horizontal bitewing. That is D0270.
• Two, three, or four horizontal bitewings. Those are D0272, D0273, and D0274. A standard four-film caries screening is 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 whose crestal bone loss the clinician is reading and tracking.
• 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.

Vertical versus horizontal, and versus the series

Orientation and count set D0277 apart from its neighbors, and a clean claim needs both right:

• Orientation. Horizontal bitewings, the usual way D0270 through D0274 sets are taken, are framed for interproximal decay and the crest. Vertical bitewings (D0277) are turned tall to read more bone height for periodontal assessment.
• Count. D0270 through D0274 are chosen strictly by film count, one through four, and their descriptors don’t specify orientation. D0277 is defined as seven to eight images. There is no separate code for a smaller vertical set, so one to four vertical films are reported with the count code that matches.

D0277 is a distinct set, not a larger D0274. A generic “BWX” entry in the practice management system is how a vertical set gets miscoded, so keep D0277 as its own entry.

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

At verification, treat the frequency check as an FMX check, not just a bitewing check. Ask the carrier 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) inside the plan’s window blocks the vertical set. This is the most common issue.
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. Keep the code and post what the plan allows.
3. Wrong quantity. Billing D0277 per film is rejected. Quantity is 1.
4. No periodontal justification. A vertical set on a patient with no charted periodontal reason can pend, because the plan expects a bone-level question to justify 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.

In 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.

Most D0277 denials are frequency denials tied to a series already on file, so keep prior imaging dates where the billing team can see them.

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.
3. Add a short narrative noting the periodontal reevaluation and the need to read alveolar bone level.
4. Expect either 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 expectations for the next series.