D4355 Full Mouth Debridement Template (FMD)

The template

Pick your PMS to format the placeholders, then copy.

PMS format

[Prompt:"name"]

Full mouth debridement to enable comprehensive oral evaluation.

RMH: Medical history reviewed/updates
BP: BP/Pulse

Indication: Indication/diagnosis
Heavy plaque and calculus preventing comprehensive evaluation.
Unable to complete periodontal charting.

FMD code support: Excessive calculus/debris prevents comprehensive periodontal diagnosis
Photo support: Intraoral photos demonstrating calculus/debris
Definitive evaluation plan: Comprehensive evaluation/periodontal diagnosis after debridement

Procedure:
Gross debridement performed.
Ultrasonic scaling.
Hand scaling.
Supragingival and subgingival deposits removed.
All quadrants treated.

Comprehensive evaluation to be completed at next visit.
Full periodontal charting at next visit.

OHI: Instructions reviewed.

Complications: None or describe.

Patient tolerance: Tolerance/response.

NV: Next visit

Field glossary

What each placeholder represents.

Medical history reviewed/updates
Confirm review and document any changes to medications, conditions, allergies, ASA status, and last physical. D4355 patients are often overdue for medical care; flag uncontrolled HTN, diabetes, smoking, and other systemic risk factors.
BP/Pulse
Today's blood pressure and pulse. Required by many state boards; standard on any patient who has not been seen in years. Flag elevated readings and any deferral or PCP referral decision.
Indication/diagnosis
Reason for the debridement — heavy generalized calculus, time since last cleaning, profuse BOP, friable inflamed tissue, inability to chart. The clinical picture that justifies a gating code rather than a routine prophy.
Excessive calculus/debris prevents comprehensive periodontal diagnosis
The single most important sentence in the note. Explicitly state that comprehensive periodontal evaluation, full 6-point charting, and/or accurate radiographic interpretation could not be performed today because of the calculus volume and tissue inflammation. "Heavy calculus" alone is not enough — the chart must say the evaluation could not be done.
Intraoral photos demonstrating calculus/debris
List the photo views captured pre-debridement and confirm they were saved to the chart. Photos are the single most effective audit defense for D4355; many carriers and most Medicaid MCOs request them on review.
Comprehensive evaluation/periodontal diagnosis after debridement
Explicit plan for the subsequent comprehensive evaluation — when the patient will return (typically 4–6 weeks), what codes are anticipated (D0150 + D0180), what radiographs and charting will be done, and what definitive therapy is anticipated (D1110, D4346, SRP). This is what makes the code "to enable a comprehensive periodontal evaluation."
Instructions reviewed
Patient-specific home-care expectations during the 4–6 week interval before the comprehensive eval — brushing technique, flossing, antimicrobial rinse, smoking cessation, medical follow-up. Avoid generic "OHI given" boilerplate.
None or describe
Document complications explicitly, even if "none." Auditors interpret silence as missing documentation, not as absence of complications. Note any profuse hemorrhage, syncope, sensitivity, or anesthesia issues.
Tolerance/response
Patient's tolerance of the procedure — sensitivity, anxiety, anesthesia or topical used, completion of the planned scaling, willingness to return for the comprehensive eval.
Next visit
Date of the scheduled comprehensive evaluation (typically 4–6 weeks out) and what's planned (D0150 + D0180 + radiographs + full perio charting + definitive treatment plan). Include any prerequisites like medical follow-up.

Documentation requirements

Because D4355 is defined by the impossibility of evaluation, the chart has to prove that impossibility — not just that scaling was performed. A defensible D4355 note includes:

Medical history review and update — meds, conditions, allergies, ASA status, last physical. Many D4355 patients are also overdue for medical care; document what was reviewed.
Vitals — BP and pulse. Required by many state boards; standard on any patient who has not been seen in years.
Time since last dental visit / dental history — explicit. "Patient reports last cleaning 8 years ago" or "no prior dental records available" is a key audit anchor. The longer the absence, the more defensible the code.
Chief complaint and reason for visit — usually "wants a cleaning," "gums bleed," "haven't been to the dentist in years," or a specific complaint that drove the visit.
Why a comprehensive evaluation could not be performed today — the single most important sentence in the note. Examples: "Heavy generalized supra- and subgingival calculus prevents accurate probing and radiographic interpretation; comprehensive periodontal evaluation deferred." This sentence is what separates D4355 from D1110 / D4346 / SRP.
Periodontal screening attempted, with explanation of why it could not be completed — note any spot-check probings, BOP observed, mobility noticed, but explicitly state that full 6-point charting was not possible because of the deposits. Auditors expect to see that you tried.
Plaque, calculus, and debris distribution and severity — generalized vs localized; heavy supragingival; subgingival deposits palpable on the explorer; tenacious calculus bridges; staining. Patient-specific findings, not boilerplate.
Intraoral photos — strongly recommended. Pre-debridement photos demonstrating the volume of deposits are the single most effective audit defense for D4355. Many carriers (and several Medicaid MCOs) request photos on review; offices that routinely capture them have the lowest D4355 recoupment rates.
Radiographs taken or attempted — note imaging exposed today and any limitations. If radiographs could not be diagnostically interpreted because of calculus, document that. Imaging is billed under its own codes (D0210 / D0220 / D0274 etc.) and is not bundled into D4355.
Procedure performed — gross debridement, ultrasonic scaling, hand scaling, full mouth, supra- and subgingival deposits removed; quadrants treated; approximate time. Some carriers ask for procedure time on appeal.
Anesthesia / topical — if used, note product and amount; many D4355 visits use topical or nothing because anesthesia for SRP would be premature without a diagnosis.
Plan for the subsequent comprehensive evaluation — explicit: "Patient to return in 4–6 weeks for D0150 + D0180 with full periodontal charting and definitive treatment plan." This sentence is what makes the code "to enable a comprehensive periodontal evaluation."
Oral hygiene instruction — patient-specific home-care expectations during the 4–6 week interval; this is when patient-driven plaque control matters most.
Complications — explicitly noted, even if "none."
Patient tolerance / response.
Next visit — date and what's planned (D0150 / D0180 + perio charting + radiographs as needed; possible D1110 / D4346 / SRP based on the diagnosis to come).

The "amnesia test" applies forcefully here: a third-party reader must be able to tell why you couldn't evaluate today and what the next visit will accomplish. Default-normal templating ("heavy calculus generalized" copy-pasted across every D4355 in the practice) is a known Medicaid OIG audit pattern.

Common denial reasons

The most common reasons D4355 is denied, downgraded, or recouped:

Same-day D0150 / D0180 / D0120 — the descriptor explicitly defers the eval to a subsequent visit; the carrier denies one of the two as bundled. The ADA's bundling guidance and carrier processing policies are aligned on this point.
Same-day D1110 / D4346 / D4341 / D4342 — D4355 conflicts with every other scaling-family code on the same DOS. Submitting both produces a denial of one (almost always the higher-fee one).
Insufficient documentation that an eval could not be performed — the chart says "heavy calculus" but doesn't explicitly state that comprehensive periodontal evaluation could not be performed today. Carriers downgrade to D1110 when the rationale is implicit instead of explicit.
No photos — many carriers and most state Medicaid MCOs request pre-debridement photos on review. Their absence is a routine downgrade trigger.
Patient is established / has prior perio chart on file — the "evaluation cannot be performed" rationale doesn't fit a patient whose periodontal status is already documented in the practice's records. Auditors flag this pattern.
Frequency violation — prior D4355 on file — once-per-lifetime-per-provider (and sometimes per-practice) limits are enforced strictly. The patient may have had a D4355 at a previous office that the front desk cannot see in the chart but the carrier can see in claim history.
Billed instead of D1110 for routine cleanings — the most-flagged audit pattern in the family. D4355 ratios above peer norms attract Medicaid OIG and commercial special-investigations attention.
No subsequent comprehensive eval ever scheduled or performed — when D4355 is followed by D1110 or SRP without an intervening D0150 / D0180, carriers treat the D4355 as a misreported prophy because the descriptor's stated purpose was never fulfilled.
D4355 shortly after a recent D1110 or D4346 — Delta Dental and several other carriers deny D4355 when claim history shows a prophy or D4346 within the prior 12 months, on the theory that those codes already addressed what D4355 would have.
Default-normal templating — every D4355 chart in the practice reads identically with the same calculus distribution and the same "patient hasn't been to the dentist in years" line. State Medicaid OIG audits routinely cite this.
Billed on the same patient who returns 6 weeks later for SRP without an intervening eval — D4355 then SRP without a D0150 / D0180 in between collapses the clinical sequence the descriptor demands.