What D5931 means

D5931 covers an obturator prosthesis, surgical. "D" is dental, "59" places it in the maxillofacial prosthetics area, and "31" is this surgical obturator. An 'obturator' is a prosthesis that closes an opening — from the Latin for 'to close/stop up.' In the mouth, an obturator closes a defect of the palate/upper jaw, sealing the oral cavity from the nasal cavity and sinuses above. 'Surgical' means this obturator is made in advance and placed AT the surgery that creates the defect. So D5931 is the immediately-placed prosthesis that seals a new palatal defect at the time of surgery.

So it's the operating-room obturator: placed at surgery to close the new palate defect immediately.

When part of the maxilla (upper jaw) and palate is removed — most commonly a maxillectomy for cancer of the palate, sinus, or upper jaw — the surgery leaves an opening between the mouth and the nasal cavity/sinuses. Without closure, this is devastating functionally: liquids and food escape into the nose, speech becomes severely hypernasal and unintelligible, and swallowing is compromised. The surgical obturator solves this from minute one: fabricated BEFORE surgery (on a model of the patient's mouth, planned with the surgeon around the expected resection), it's placed at the end of the operation, sealing the defect immediately. Its roles: immediate separation — it closes the mouth from the nose/sinus so the patient can swallow and speak right away (often avoiding or shortening feeding-tube dependence); wound management — it supports the surgical packing/dressing over the defect and protects the healing wound; psychological benefit — waking up able to speak and drink is enormously important after such a surgery; and transition — it serves the first days/weeks, then is replaced as healing progresses (interim obturator D5936 during the healing months, then definitive D5932 once the site is stable). The surgical obturator is usually a relatively simple acrylic plate (retained with clasps on remaining teeth, or wired/screwed in place when needed), designed for immediate function rather than final esthetics. It's specialized maxillofacial prosthodontic work, closely coordinated with the surgical/oncology team. Coverage is usually medical/reconstructive (by report). This code is in the maxillofacial prosthetics area. Documentation supports the claim.

When it's typically used

D5931 is reported for a surgical obturator — the prosthesis fabricated before and placed at maxillectomy (or similar palatal resection) surgery to immediately close the new palatal defect. It's used so the patient can swallow and speak right after surgery, to support the surgical dressing and protect the wound, and to bridge the first days/weeks until the interim obturator (D5936). The three-stage sequence is surgical (D5931) → interim (D5936) → definitive (D5932).

How much does D5931 cost?

A surgical obturator's cost reflects pre-surgical planning with the surgeon, fabrication on the patient's model around the planned resection, and placement/adjustment at surgery. Sample fee-schedule values (e.g., some state programs) place it around a four-figure level (e.g., roughly $1,000), varying by region/complexity. It's typically a medical/reconstructive benefit as part of cancer/defect care. Verify coverage with the relevant (often medical) plan.

Is D5931 covered by insurance?

Coverage for a surgical obturator is usually handled as a medical/reconstructive benefit (it's integral to maxillectomy/cancer care — enabling immediate swallowing and speech), determined by report and medical necessity. Documentation of the diagnosis, the planned/performed resection, and the prosthesis supports the claim. The subsequent interim (D5936) and definitive (D5932) obturators are separate stages with their own claims. Coordination with medical coverage is standard. Verifying coverage helps.

Why a palate defect must be closed

The palate separates mouth from nose, and understanding this clarifies the code.

Understanding the palate's role clarifies D5931. The palate (roof of the mouth) is the floor of the nose and sinuses — a structural wall separating the oral cavity below from the nasal cavity and maxillary sinuses above. That separation is essential for basic functions: swallowing — pressure builds in the mouth to push food/liquid backward; with a hole in the palate, liquids and food escape upward into the nose instead (nasal regurgitation); speech — most speech sounds require oral air pressure; a palatal opening lets air leak into the nose, making speech severely hypernasal, weak, and hard to understand; and protection — the defect exposes the nasal/sinus tissues to oral contents.

When maxillectomy (removal of part of the upper jaw/palate — usually for cancer of the palate, maxillary sinus, or upper jaw) creates such an opening, closing it is not cosmetic — it's fundamental to eating, drinking, and speaking. An obturator is the prosthetic answer: a plate that spans and seals the defect, restoring the separation. D5931 is the FIRST obturator — placed at the surgery itself, so the separation is restored from the very start. So the palate defect must be sealed for swallowing and speech — the obturator does it. Understanding this helps patients see that the palate (roof of the mouth) is the floor of the nose and sinuses (a structural wall separating the oral cavity below from the nasal cavity and maxillary sinuses above) and that separation is essential for basic functions — swallowing (pressure building in the mouth to push food/liquid backward, with a hole in the palate liquids and food escaping upward into the nose instead/nasal regurgitation), speech (most speech sounds requiring oral air pressure, a palatal opening letting air leak into the nose, making speech severely hypernasal, weak, and hard to understand), and protection (the defect exposing the nasal/sinus tissues to oral contents) — when maxillectomy (removal of part of the upper jaw/palate, usually for cancer of the palate, maxillary sinus, or upper jaw) creates such an opening, closing it being not cosmetic but fundamental to eating, drinking, and speaking, an obturator being the prosthetic answer (a plate that spans and seals the defect, restoring the separation), D5931 being the FIRST obturator (placed at the surgery itself so the separation is restored from the very start).

Made before surgery, placed on the table

Pre-surgical planning enables immediate function, and understanding this clarifies the process.

Understanding the timing clarifies D5931. The defining feature of a surgical obturator is that it exists BEFORE the defect does: pre-surgical records — before the operation, the prosthodontist takes impressions and makes a model of the patient's mouth; surgical planning together — prosthodontist and surgeon plan the expected resection (which part of the palate/jaw will be removed); the obturator is designed on the model around that planned defect (the model may be modified to simulate the resection); fabrication — a relatively simple acrylic plate is made — designed for immediate function and wound support, not final refinement; and placement at surgery — at the end of the operation, the surgeon/prosthodontist places the obturator over the fresh defect (retained by clasps on remaining teeth, or wired/screwed to bone when few or no teeth remain), typically holding the surgical packing in place against the wound.

The patient wakes up with the defect already sealed — able to swallow liquids and speak intelligibly in the immediate postoperative period, which can shorten or avoid feeding-tube dependence and enormously helps morale. Adjustments follow in the early days as packing is changed. So the surgical obturator is planned and built pre-op for immediate placement. Understanding this helps patients see that the defining feature of a surgical obturator is that it exists BEFORE the defect does — pre-surgical records (before the operation the prosthodontist taking impressions and making a model of the patient's mouth), surgical planning together (prosthodontist and surgeon planning the expected resection/which part of the palate/jaw will be removed, the obturator designed on the model around that planned defect, the model possibly modified to simulate the resection), fabrication (a relatively simple acrylic plate made, designed for immediate function and wound support, not final refinement), and placement at surgery (at the end of the operation the surgeon/prosthodontist placing the obturator over the fresh defect, retained by clasps on remaining teeth or wired/screwed to bone when few or no teeth remain, typically holding the surgical packing in place against the wound) — the patient waking up with the defect already sealed (able to swallow liquids and speak intelligibly in the immediate postoperative period, which can shorten or avoid feeding-tube dependence and enormously helps morale), adjustments following in the early days as packing is changed.

The three obturator stages

Surgical, interim, definitive — a staged rehabilitation, and understanding this clarifies the sequence.

Understanding the staging clarifies D5931's place. Obturator rehabilitation after maxillectomy proceeds in three stages matched to healing: surgical obturator (D5931, this code) — placed AT surgery; seals the fresh defect immediately; simple, function-first design; serves roughly the first days to weeks (often until the packing phase ends); interim obturator (D5936) — as initial healing progresses and swelling changes the defect, an interim obturator takes over for the healing months; it's refined as tissues change (relined/adjusted repeatedly), restoring better speech/swallowing and often adding teeth for function/appearance while the site matures; and definitive obturator (D5932) — once the defect and tissues are stable (typically months after surgery, and after any radiation effects settle), the definitive obturator is made — the long-term, fully refined prosthesis with optimal fit, function, and appearance.

Each stage matches the tissue state: immediate sealing (surgical) → adaptable companion through healing (interim) → stable long-term restoration (definitive). Modifications along the way have their own code (D5933). So D5931 is stage one of the three-stage obturator sequence. Understanding this helps patients see that obturator rehabilitation after maxillectomy proceeds in three stages matched to healing — surgical obturator (D5931, this code, placed AT surgery, sealing the fresh defect immediately, simple function-first design, serving roughly the first days to weeks, often until the packing phase ends), interim obturator (D5936, as initial healing progresses and swelling changes the defect an interim obturator taking over for the healing months, refined as tissues change/relined/adjusted repeatedly, restoring better speech/swallowing and often adding teeth for function/appearance while the site matures), and definitive obturator (D5932, once the defect and tissues are stable, typically months after surgery and after any radiation effects settle, the definitive obturator being made, the long-term fully refined prosthesis with optimal fit, function, and appearance) — each stage matching the tissue state (immediate sealing/surgical → adaptable companion through healing/interim → stable long-term restoration/definitive), modifications along the way having their own code (D5933).

Where D5931 fits in the codes

D5931 opens the obturator codes, and understanding this clarifies the coding.

Understanding where D5931 sits clarifies the coding. D5931 is among the maxillofacial prosthetics codes (D5900s), specifically the obturator family: D5931 (obturator prosthesis, surgical — this code, placed at surgery), D5936 (obturator prosthesis, interim — the healing-phase obturator), D5932 (obturator prosthesis, definitive — the long-term obturator), D5933 (obturator prosthesis, modification — adjusting/relining an existing obturator). Nearby are the mandibular resection prostheses (D5934/D5935 — the lower-jaw counterparts for mandibulectomy patients) and the other maxillofacial codes.

So D5931 is precisely: obturator + surgical (the immediately-placed, at-surgery obturator). It's distinguished from D5936 (interim — healing months) and D5932 (definitive — stable long-term) by TIMING and purpose, and from D5933 (modification — altering an existing obturator, not making one). The prosthodontist codes D5931 for the obturator placed at the resection surgery. So D5931 is the surgical member of the obturator family. Understanding this helps patients see that D5931 is among the maxillofacial prosthetics codes (D5900s), specifically the obturator family — D5931 (obturator prosthesis, surgical, this code, placed at surgery), D5936 (obturator prosthesis, interim, the healing-phase obturator), D5932 (obturator prosthesis, definitive, the long-term obturator), D5933 (obturator prosthesis, modification, adjusting/relining an existing obturator) — nearby being the mandibular resection prostheses (D5934/D5935, the lower-jaw counterparts for mandibulectomy patients) and the other maxillofacial codes — so D5931 is precisely obturator + surgical (the immediately-placed at-surgery obturator), distinguished from D5936 (interim, healing months) and D5932 (definitive, stable long-term) by TIMING and purpose, and from D5933 (modification, altering an existing obturator, not making one), the prosthodontist coding D5931 for the obturator placed at the resection surgery.

Frequently asked questions

What is the D5931 dental code?

It's a surgical obturator — an intraoral prosthesis made before and placed AT maxillectomy surgery (removal of part of the upper jaw/palate, usually for cancer) to immediately close the new palatal defect. It seals the mouth from the nose/sinuses so the patient can swallow and speak right after surgery, and it supports the surgical dressing. It's the first of three obturator stages (then interim D5936, then definitive D5932).

What is an obturator?

A prosthesis that closes an opening — in the mouth, a plate that spans and seals a defect of the palate/upper jaw, separating the oral cavity from the nasal cavity and sinuses above. Without that seal, liquids escape into the nose, speech becomes severely hypernasal, and swallowing is compromised. The obturator restores the separation the palate normally provides.

How can it be ready at the surgery?

It's made in advance: the prosthodontist takes impressions before the operation and, together with the surgeon, plans the expected resection. The obturator is designed and fabricated on the patient's model around that planned defect. At the end of the operation it's placed over the fresh defect — retained by clasps on remaining teeth, or wired/screwed in place — usually holding the surgical packing against the wound.

Why does immediate placement matter?

Because the patient wakes up already able to swallow liquids and speak intelligibly — instead of facing days or weeks with an open connection between mouth and nose. That can shorten or avoid feeding-tube dependence, protects the healing wound, and is a huge psychological lift after major cancer surgery. Function is restored from the very first day.

What happens after the surgical obturator?

As healing progresses and swelling subsides, the defect changes shape — so an interim obturator (D5936) takes over for the healing months, adjusted and relined as tissues evolve. Once the site is stable (typically months later, after any radiation effects settle), the definitive obturator (D5932) is made — the refined, long-term prosthesis. Modifications along the way are coded D5933.

Is it covered, and what does it cost?

It's typically a medical/reconstructive benefit — integral to maxillectomy/cancer care — determined by report. Sample fee schedules place a surgical obturator around the $1,000 level, varying by region and complexity. Documentation of the diagnosis and resection supports the claim; the later interim and definitive stages are separate claims. Verify your coverage.

This page is an independent, plain-language explanation for general information only. It is not billing, coding, or clinical advice. For the official CDT descriptor and current-year wording, refer to the American Dental Association.