What D7871 means

D7871 covers non-arthroscopic lysis and lavage (of the TMJ). "D" is dental, "78" is this oral surgery (TMJ) group, and "71" is this non-arthroscopic lysis and lavage. 'Lysis' means breaking up/releasing (here, adhesions — abnormal fibrous bands within the joint); 'lavage' means flushing/washing out (irrigating the joint); 'non-arthroscopic' means it's done WITHOUT an arthroscope (no scope inserted to visualize the joint). So D7871 is the breaking up of adhesions and flushing of the TMJ, done without a scope.

So it's flushing the jaw joint and breaking up its adhesions — a needle/instrument procedure without a scope — done to free a restricted joint and improve movement.

This is closely related to arthrocentesis (D7870, the basic joint lavage) but emphasizes the lysis of adhesions in addition to the lavage — and it's distinguished from the arthroscopic procedures (which use a scope). The technique uses needles/cannulas placed into the joint to flush it (lavage) and to break up adhesions — the lysis is achieved through the hydraulic pressure of the irrigation (distending the joint to release adhesions) and joint manipulation (mobilizing the jaw to free the restrictions), without directly visualizing/cutting them via a scope. It's used for TMJ internal derangement where adhesions and restriction are the problem — for example a closed lock (an acutely or chronically restricted joint with a displaced/stuck disc and adhesions) or other situations where adhesions limit the joint's movement — to free up the joint, improve the disc/condyle mobility, and improve jaw opening (and reduce pain). It's minimally invasive (needles, no incision, no scope), often done under sedation or general anesthesia. It sits between arthrocentesis (D7870, simpler lavage) and the arthroscopic procedures (D7872-D7877, which use a scope), and well below open surgery in invasiveness. It's performed by an oral and maxillofacial surgeon. This code is in the TMJ group (D7810-D7899). TMJ-related coverage varies. Documentation of the condition and the procedure supports the claim.

When it's typically used

D7871 is reported for non-arthroscopic lysis and lavage of the TMJ — flushing the joint and breaking up adhesions without a scope (via the hydraulic pressure of irrigation and manipulation) — used for TMJ disorders where adhesions/restriction limit movement (e.g., a closed lock or adhesions causing limited opening), to free the joint and improve opening and symptoms. It's a step beyond a basic arthrocentesis (D7870), and is non-arthroscopic (vs the scope-based D7872-D7877).

How much does D7871 cost?

Non-arthroscopic lysis and lavage is a minimally invasive procedure — more involved than a basic arthrocentesis but less than arthroscopy or open surgery; the procedure itself is moderate, with the total depending on the anesthesia/sedation and setting (often done under sedation or general anesthesia). Coverage varies (TMJ treatment is limited or excluded by some plans). Verify your specific coverage.

Is D7871 covered by insurance?

Coverage for TMJ procedures varies — some dental and medical plans limit or exclude TMJ treatment, so coverage isn't guaranteed. Documentation of the condition (the adhesions/restriction, e.g., a closed lock) and the lysis and lavage supports the claim, and prior conservative care is often expected. As a relatively less invasive procedure, it may be used before arthroscopy or open surgery. It's distinguished from arthrocentesis (D7870) and the arthroscopic procedures (D7872-D7877). Verifying coverage helps.

Lysis and lavage explained

Lysis breaks up adhesions and lavage flushes the joint, and understanding this clarifies the code.

Understanding the terms clarifies D7871. The procedure combines two actions: lysis — breaking up/releasing adhesions: 'adhesions' are abnormal fibrous bands or sticking that can form within the joint (e.g., from inflammation, internal derangement, or prior problems), restricting the joint's movement; 'lysis' means breaking these up to free the joint; and lavage — flushing/washing out the joint: irrigating the joint with fluid to wash out inflammatory mediators and debris (as in an arthrocentesis). 'Non-arthroscopic' specifies that this is done without an arthroscope (no scope inserted to see inside the joint).

So D7871 breaks up the joint's adhesions and flushes it out — addressing both the restriction (from adhesions) and the inflammation/debris (via the lavage), minimally invasively and without a scope. The combination targets a joint that's restricted by adhesions and needs freeing and cleaning. So lysis and lavage = freeing the joint (breaking adhesions) + flushing it. Understanding this helps patients see that the procedure combines two actions — lysis (breaking up/releasing adhesions, the abnormal fibrous bands or sticking that can form within the joint from inflammation, internal derangement, or prior problems and restrict its movement) and lavage (flushing/washing out the joint with fluid to remove inflammatory mediators and debris, as in an arthrocentesis) — with 'non-arthroscopic' specifying it's done without an arthroscope (no scope to see inside) — so D7871 breaks up the joint's adhesions and flushes it out (addressing both the restriction from adhesions and the inflammation/debris via the lavage, minimally invasively and without a scope), targeting a joint restricted by adhesions that needs freeing and cleaning.

How the adhesions are broken without a scope

The lysis is achieved by hydraulic pressure and manipulation, and understanding this clarifies the technique.

Understanding how the adhesions are broken up without a scope clarifies the 'non-arthroscopic' technique. Since no arthroscope is used (so the surgeon doesn't directly see and cut the adhesions through a scope), the lysis is achieved by: hydraulic pressure — needles/cannulas are placed into the joint and fluid is injected/flushed under pressure, distending the joint; this hydraulic distension (the pressure of the fluid filling the joint space) helps stretch and break up the adhesions and free the disc/condyle; manipulation — the jaw is manipulated (moved) during/after the lavage to mobilize the joint, mechanically helping to release the adhesions and restore movement; and the lavage flow — the flushing itself helps wash out the broken-up material and debris.

So the adhesions are released indirectly — through the pressure of the irrigation and the manipulation — rather than by directly visualizing and cutting them via a scope (which is what the arthroscopic version would do). This is what makes it 'non-arthroscopic' lysis and lavage. It's effective for releasing adhesions and freeing a restricted joint in suitable cases, while remaining minimally invasive. Understanding this helps patients see that since no arthroscope is used (so the surgeon doesn't directly see and cut the adhesions through a scope), the lysis is achieved by hydraulic pressure (needles/cannulas placed into the joint, fluid injected/flushed under pressure to distend the joint, the hydraulic distension stretching and breaking up the adhesions and freeing the disc/condyle), manipulation (the jaw moved during/after the lavage to mobilize the joint, mechanically helping release the adhesions and restore movement), and the lavage flow (the flushing washing out the broken-up material and debris) — so the adhesions are released indirectly through the pressure of the irrigation and the manipulation rather than by directly visualizing and cutting them via a scope (which the arthroscopic version would do), which is what makes it 'non-arthroscopic' lysis and lavage, effective for releasing adhesions and freeing a restricted joint in suitable cases while remaining minimally invasive.

Arthrocentesis vs lysis and lavage vs arthroscopy

These minimally invasive procedures form a spectrum, and understanding it clarifies where D7871 sits.

Understanding the related minimally invasive TMJ procedures clarifies where D7871 sits. There's a spectrum of less-invasive joint procedures: arthrocentesis (D7870) — the basic needle lavage: flushing the joint (washing out inflammatory mediators), with some adhesion release via the hydraulic pressure and manipulation; non-arthroscopic lysis and lavage (D7871, this code) — emphasizes the lysis of adhesions in addition to the lavage (still without a scope) — essentially the lavage-plus-adhesion-release procedure done non-arthroscopically; and arthroscopy (D7872-D7877) — using a scope: inserting an arthroscope into the joint to directly visualize it and perform procedures (including arthroscopic lysis and lavage, D7873, where the adhesions are released under direct vision through the scope).

So arthrocentesis, non-arthroscopic lysis and lavage, and arthroscopic lysis and lavage are related approaches differing in technique and the emphasis on adhesion release/visualization. D7871 is the non-arthroscopic lysis and lavage — between the basic arthrocentesis and the scope-based arthroscopy. (There can be overlap in how these are described, but the codes distinguish non-arthroscopic D7871 from arthroscopic D7873.) The surgeon codes based on the technique used. Understanding this helps patients see that there's a spectrum of less-invasive TMJ procedures — arthrocentesis (D7870, the basic needle lavage: flushing the joint, with some adhesion release via hydraulic pressure and manipulation), non-arthroscopic lysis and lavage (D7871, this code, emphasizing the lysis of adhesions in addition to the lavage, still without a scope — the lavage-plus-adhesion-release done non-arthroscopically), and arthroscopy (D7872-D7877, using a scope to directly visualize the joint and perform procedures, including arthroscopic lysis and lavage D7873 where adhesions are released under direct vision) — so these are related approaches differing in technique and the emphasis on adhesion release/visualization, with D7871 being the non-arthroscopic lysis and lavage (between the basic arthrocentesis and the scope-based arthroscopy), the codes distinguishing non-arthroscopic D7871 from arthroscopic D7873, and the surgeon coding based on the technique used.

Where D7871 fits in the codes

D7871 is among the minimally invasive TMJ procedures, and understanding this clarifies the coding.

D7871 is one of the minimally invasive TMJ procedures in the TMJ group (D7810-D7899) — and understanding this clarifies the coding. The group's procedures range in invasiveness: minimally invasive (no open surgery) — arthrocentesis (D7870, needle lavage), non-arthroscopic lysis and lavage (D7871, this code), and the arthroscopic procedures (D7872-D7877, scope-based); open surgery — arthrotomy (D7860) and the open procedures (condylectomy D7840, discectomy D7850, disc repair D7852, synovectomy D7854, myotomy D7856, joint reconstruction D7858, arthroplasty D7865); plus non-surgical/other (manipulation under anesthesia D7830, occlusal orthotic device D7880/D7881, unspecified TMD therapy D7899) and the dislocation reductions (D7810/D7820).

D7871 specifically is the non-arthroscopic lysis and lavage — a minimally invasive procedure (no scope, no incision) that flushes the joint and breaks up adhesions. The surgeon codes D7871 for this non-arthroscopic technique (vs D7870 for a basic arthrocentesis, or the arthroscopic codes D7872-D7877 when a scope is used). It's a less-invasive option, often used before escalating to arthroscopy or open surgery. So D7871 is the non-arthroscopic lysis and lavage in the TMJ group. Understanding this helps patients see that D7871 is one of the minimally invasive TMJ procedures (in the D7810-D7899 group, whose procedures range in invasiveness) — the minimally invasive ones (no open surgery) being arthrocentesis (D7870, needle lavage), non-arthroscopic lysis and lavage (D7871, this code), and the arthroscopic procedures (D7872-D7877, scope-based), alongside open surgery (arthrotomy D7860 and the open procedures), non-surgical/other (manipulation under anesthesia D7830, occlusal orthotic device D7880/D7881, unspecified TMD therapy D7899), and the dislocation reductions (D7810/D7820) — so D7871 specifically is the non-arthroscopic lysis and lavage (minimally invasive, no scope or incision, flushing the joint and breaking up adhesions), coded for this non-arthroscopic technique (versus D7870 for a basic arthrocentesis or the arthroscopic codes D7872-D7877 when a scope is used), a less-invasive option often used before escalating to arthroscopy or open surgery.

Frequently asked questions

What is the D7871 dental code?

It's non-arthroscopic lysis and lavage of the temporomandibular joint (TMJ) — a minimally invasive procedure that breaks up adhesions (lysis) and flushes the joint (lavage), WITHOUT an arthroscope. It's used for TMJ disorders where adhesions/restriction limit movement (like a closed lock), to free the joint and improve opening and symptoms.

What do 'lysis' and 'lavage' mean?

'Lysis' means breaking up/releasing adhesions (abnormal fibrous bands within the joint that restrict movement). 'Lavage' means flushing/washing out the joint (irrigating it to remove inflammatory mediators and debris). 'Non-arthroscopic' means it's done without an arthroscope (no scope inserted to see inside the joint).

How are the adhesions broken up without a scope?

Through the hydraulic pressure of the irrigation (fluid injected/flushed under pressure distends the joint, stretching and breaking up adhesions) and manipulation of the jaw (mobilizing the joint to mechanically release the adhesions) — rather than by directly visualizing and cutting them through a scope (which the arthroscopic version, D7873, would do).

How is it different from arthrocentesis (D7870)?

They're closely related minimally invasive procedures. Arthrocentesis (D7870) is the basic needle lavage (flushing the joint). D7871 (non-arthroscopic lysis and lavage) emphasizes breaking up adhesions in addition to the lavage. Both are done without a scope; D7871 is essentially the lavage-plus-adhesion-release procedure.

How is it different from arthroscopy?

D7871 is non-arthroscopic — no scope is used; the adhesions are released indirectly (by pressure and manipulation). The arthroscopic procedures (D7872-D7877) use an arthroscope inserted into the joint to directly visualize it and perform procedures (including arthroscopic lysis and lavage, D7873, releasing adhesions under direct vision).

What does it cost, and what insurance applies?

It's minimally invasive — more involved than a basic arthrocentesis but less than arthroscopy or open surgery; the total depends on the anesthesia/sedation and setting (often done under sedation or general anesthesia). Coverage for TMJ procedures varies (some plans limit or exclude TMJ treatment). Verify your specific 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.