21465

🦷 CPT 21465 — Open Treatment of Mandibular Condylar Fracture

Quick Reference

wRVU: [verify] · Global Period: 090 (90 days — major procedure) · Assistant Payable: ✅ Typically allowed for OR‑level condylar fracture repair · Bilateral Indicator: 0

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📋 Clinical Description

CPT 21465 describes open treatment of a mandibular condylar fracture, in which the surgeon surgically exposes the condylar region (head, neck, or subcondylar area), performs anatomic reduction, and stabilizes the fracture, typically using internal fixation (plates/screws) and, when needed, adjunctive maxillomandibular fixation.¹² Open approaches may be preauricular, retromandibular, submandibular, or transparotid, depending on fracture level and surgeon preference.

Condylar fractures are common mandibular injuries and may involve unilateral or bilateral condylar processes, with or without displacement or dislocation from the glenoid fossa.³⁻⁵ Traditional management often utilizes closed treatment with maxillomandibular fixation; however, open reduction and internal fixation have become more common for significantly displaced, dislocated, or bilateral condylar fractures where functional or aesthetic outcomes would otherwise be compromised.³⁻⁵ 21465 is selected when documentation clearly supports: (1) condylar location, (2) open exposure, and (3) active reduction and stabilization of the condylar fracture.

Typical indications include:

• Displaced condylar neck/head fractures with loss of ramus height and malocclusion that cannot be adequately corrected by closed reduction.
• Bilateral condylar fractures with open bite or significant functional impairment.
• Condylar fractures with dislocation from the glenoid fossa requiring direct visualization and reduction.
• Condylar fractures in adults where closed treatment risks ankylosis or long‑term functional limitation.

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🔬 Anatomical & Procedural Considerations

Variant / Situation	Mechanism / Key Steps	Key Notes / Coding Impact
High condylar head fracture	Preauricular or transparotid incision, elevation of soft tissues, direct visualization of the condylar head, reduction into the fossa, and fixation with small plates/screws or other hardware as feasible.	Classic use of 21465 when the condylar head is fractured and displaced; documentation should specify condylar level and the fixation technique used.
Condylar neck/subcondylar fracture	Retromandibular or submandibular approach with dissection to the condylar neck, reduction, and rigid internal fixation to restore ramus height and occlusion.	Often used for significantly displaced condylar neck fractures; must be distinguished from fractures of the mandibular body/angle, which are reported with 21461/21462 or 21470 depending on complexity.
Bilateral condylar fractures	Approaches may be unilateral or bilateral; each condyle is reduced and stabilized to restore vertical dimension and occlusion, sometimes combined with arch bars and light guiding elastics.	Coding generally reports 21465 once when a single condylar procedure descriptor is used; extremely complex bilateral cases may qualify for 21470 if documentation supports a “complicated mandibular fracture” scenario.

Clinical Pearl

Reserve 21465 for condylar fractures treated with open reduction and stabilization. For fractures of other mandibular segments (symphysis, body, angle), use appropriate codes from the 21450-21462 range; for closed treatment of condylar fractures, use the closed mandible fracture codes (such as 21451) when documentation supports closed reduction rather than open surgery.

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✅ Procedure Includes

The following services are generally included in 21465:

• Pre‑ and intra‑operative evaluation of condylar fracture pattern and occlusion after the surgeon assumes global fracture care responsibility.
• Surgical exposure of the condylar region via preauricular, retromandibular, submandibular, or transparotid approaches, including tissue dissection and retraction.
• Anatomic reduction of the condylar fragments and restoration of mandibular height and occlusion.
• Stabilization with internal fixation hardware (for example, miniplates, lag screws) as required by fracture configuration.
• Use of temporary maxillomandibular fixation (for example, MMF screws or light elastics) when placed and removed during the same operative episode as part of the condylar repair.
• Routine postoperative visits related to the condylar fracture within the 90‑day global period.

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❌ Excludes / Do Not Report Together

Code	Description	Relationship to 21465
21450-21453	Closed treatment of mandibular fracture (with/without manipulation or interdental fixation)	These cover closed management of mandibular fractures; use only when condylar fractures are treated without open exposure. Do not report in addition to 21465 for the same condyle and episode.
21452	Percutaneous treatment of mandibular fracture, with external fixation	Represents percutaneous external fixation of mandible; not used for open condylar ORIF.
21461 / 21462	Open treatment of mandibular fracture without / with interdental fixation (non‑condylar segments)	These codes are for open treatment of mandibular fractures excluding the condyle. Do not use them when the fracture is specifically condylar and 21465 applies based on documentation.
21470	Open treatment of complicated mandibular fracture	Used for complicated mandibular fractures when operative work exceeds typical 21461/21462/21465 parameters (for example, multiple approaches, bone loss, severe comminution). Only substitute 21470 when documentation meets payer and AMA criteria for “complicated” fracture treatment.
21198	Osteotomy, mandible, segmental	Represents elective or reconstructive osteotomy, not traumatic fracture treatment; do not report with 21465 for the same segment and indication.
E/M codes (9928x / 9921x / 9920x)	ED / office visits	Separately reportable only when they meet criteria for a significant, separately identifiable E/M service outside the global fracture care (modifier 25) or when fracture care has not yet been assumed.

Bundling Alert — Global Period is 090, Not 000

Because 21465 is a major procedure with a 90‑day global period, routine postoperative visits, occlusal checks, and imaging for the same condylar fracture are included in the global package. Unrelated E/M services during the global period require modifier -24 with documentation of a different diagnosis, and additional operative procedures on the condyle may require modifiers such as -58 (staged), -78 (unplanned return to OR), or -79 (unrelated procedure) depending on clinical circumstances.

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🩺 Common ICD‑10‑CM Pairings

Initial Encounter — Condylar Process Fractures

ICD-10 Code	Description	HCC?	Clinical Notes
S02.611A	Fracture of condylar process of right mandible, initial encounter for closed fracture	No	Use when a right‑sided condylar fracture is documented as closed and treated with open reduction via a preauricular/retromandibular approach.
S02.611B	Fracture of condylar process of right mandible, initial encounter for open fracture	No	Use when the right condylar fracture meets criteria for an open fracture (for example, associated wound, communication with external environment).
S02.612A	Fracture of condylar process of left mandible, initial encounter for closed fracture	No	Select when a left condylar fracture is closed and treated with open reduction and internal fixation.
S02.612B	Fracture of condylar process of left mandible, initial encounter for open fracture	No	For open left condylar fractures treated with 21465.
S02.613A	Fracture of condylar process of mandible, bilateral, initial encounter for closed fracture	No	For bilateral condylar fractures documented as closed; commonly considered for open ORIF in adults when displacement or malocclusion is severe.
S02.613B	Fracture of condylar process of mandible, bilateral, initial encounter for open fracture	No	Use when bilateral condylar fractures are open and managed surgically.
S02.619A	Fracture of condylar process of mandible, unspecified side, initial encounter for closed fracture	No	Reserve for situations in which the side is not clearly documented; query whenever laterality can be clarified.
S02.619B	Fracture of condylar process of mandible, unspecified side, initial encounter for open fracture	No	Least specific; avoid when operative documentation or imaging identifies the side(s).

Subsequent and Sequela Codes

ICD-10 Code	Description	HCC?	Clinical Notes
S02.611D / S02.612D	Fracture of condylar process of mandible, subsequent encounter for fracture with routine healing (right/left)	No	Use when documenting routine healing at follow‑up visits after the initial encounter.
S02.611G / S02.612G	Fracture of condylar process of mandible, subsequent encounter for fracture with delayed healing (right/left)	No	For delayed healing as evidenced by persistent fracture line or functional impairment requiring prolonged immobilization or secondary procedures.
S02.613S / S02.619S	Fracture of condylar process of mandible, sequela (bilateral/unspecified)	No	Use for long‑term sequelae such as malocclusion, restricted jaw motion, or TMJ dysfunction once the acute phase has resolved.

Coding Specificity Reminder

Condylar fracture codes require laterality (right/left/bilateral), encounter type (initial, subsequent, sequela), and open vs closed status. Operative and imaging reports often document these elements explicitly; avoid unspecified S02.619‑ codes when more specific options are supported. Query the surgeon when laterality or open/closed status is ambiguous, particularly in multi‑trauma situations.

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🏥 MS‑DRG and Inpatient Considerations

Inpatient Coding Reminder

Facility‑side coding for open condylar fractures uses ICD‑10‑PCS Reposition codes for the mandible/condyle with an open approach and internal fixation device specified in the device character. These PCS codes, combined with S02.611‑/S02.612‑/S02.613‑ diagnoses, typically group into head and neck trauma DRGs. Professional claims use CPT 21465, but inpatient reimbursement and DRG assignment are governed by PCS and diagnosis coding rather than CPT.

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🔧 ICD‑10‑PCS Equivalents (Inpatient Facility Coding)

Note

In ICD‑10‑PCS, open treatment of condylar fractures maps to Reposition of mandible or, depending on the hospital’s coding detail, a more specific condylar body‑part value. The approach is coded as open, and the device character captures the presence of internal fixation hardware. If staged procedures (for example, secondary bone grafting, hardware removal) are performed, they are coded separately using appropriate root operations (for example, Supplement, Removal) and may affect DRG assignment independently of the original fracture repair.

Examples:

• Reposition of mandible, open approach, internal fixation device — initial open ORIF of condylar fracture.
• Removal of internal fixation device from mandible, open approach — later surgery to remove plates or screws when indicated.
• Supplement of mandible with autologous or synthetic bone graft, open approach — for reconstruction following condylar fracture‑related bone loss.

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📝 Coding Examples

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Example 1 — Inpatient: Unilateral Displaced Condylar Neck Fracture

Clinical Scenario:
A 28‑year‑old male is admitted after a motor‑vehicle collision with right preauricular pain, malocclusion, and limited mouth opening. CT imaging demonstrates a displaced fracture of the condylar neck of the right mandible with shortened ramus height and mediolateral displacement. After discussion of risks and benefits, the oral and maxillofacial surgeon proceeds with open reduction via a retromandibular/transparotid approach. Intraoperatively, the surgeon exposes the condylar neck, reduces the fragments, and secures them with a miniplate and screws; light guiding elastics are applied postoperatively to fine‑tune occlusion.

Field	Code	Rationale
CPT	21465	Open treatment of a mandibular condylar fracture; operative note describes open exposure, anatomic reduction, and internal fixation of the right condylar neck.
PDx	S02.611A	Fracture of condylar process of right mandible, initial encounter for closed fracture; fracture is not described as open, but is treated with open reduction.

Note

Routine postoperative visits and minor adjustments of guiding elastics related to this condylar fracture are bundled in the 90‑day global period for 21465. If a later unplanned return to the OR is required for complications (for example, hardware loosening), that procedure may require an additional CPT code with modifier 78 or 58, depending on intent and timing.

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Example 2 — Inpatient: Bilateral Displaced Condylar Fractures

Clinical Scenario:
A 40‑year‑old female presents after a fall from height with bilateral condylar fractures and anterior open bite. CT reveals bilateral condylar neck fractures with mediolateral displacement but no other mandibular fractures. The surgeon performs open reduction and internal fixation of both condylar necks via bilateral retromandibular approaches, restoring ramus height and occlusion. Rigid fixation is used on both sides, and short‑term elastics are placed postoperatively.

Field	Code	Rationale
CPT	21465	Open treatment of mandibular condylar fracture; a single procedure code is generally used for bilateral condylar ORIF when described under this one code family.
PDx	S02.613A	Fracture of condylar process of mandible, bilateral, initial encounter for closed fracture — accurately captures bilateral condylar fractures treated with open reduction.

Warning

Even in bilateral cases, 21465 is typically reported once, not per condyle, unless specific payer or AMA guidance indicates otherwise. If the operative report describes additional non‑condylar mandibular fractures treated with open reduction, additional codes from the 2146x/2147x range may be needed, but documentation must strongly support separate, distinct work.

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⚠️ Common Coding Pitfalls

• Using non‑condylar mandible codes for condylar fractures: 21450-21462 apply to non‑condylar mandibular fractures, while 21465 is specific to the condyle. Using 21461/21462 for a clearly documented condylar fracture can misrepresent the site of service.

• Defaulting to closed treatment codes when open treatment is documented: If the operative note describes open exposure and internal fixation of a condylar fracture, 21465 should be used instead of closed fracture codes such as 21451. Carefully review operative descriptions for terms like “incision,” “exposure,” and “plating.”

• Ignoring 90‑day global implications: Treating 21465 as a minor procedure can lead to separate billing for postoperative visits and fracture‑related imaging. Ensure the practice tracks the global window and applies modifiers correctly for unrelated services or staged procedures.

• Inadequate ICD‑10‑CM specificity: Condylar fracture documentation often includes side (right vs left vs bilateral) and open vs closed status. Defaulting to unspecified codes like S02.619A/B when more specific S02.611‑/S02.612‑/S02.613‑ codes are supported undermines data quality and registries.

• Not distinguishing when 21470 (complicated fracture) is more appropriate: Some highly complex condylar fracture patterns may involve multiple approaches, bone loss, or combined reconstructive steps that meet criteria for 21470. Only use 21470 when clearly supported; otherwise, 21465 remains the standard code for straightforward open condylar fracture repair.

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📎 Sources

^{1. AMA and NIH code references listing CPT 21465 as “Open treatment of mandibular condylar fracture” within the fracture and/or dislocation procedures on the head section.}¹²⁴
^{2. AAPC oral surgery coding guidance and Zimmer Biomet OmniMax MMF System coding references identifying 21465 as the dedicated code set for mandibular condylar fractures, distinct from 21450-21462 for non‑condylar mandibular fractures.}⁶⁷
^{3. Specialty otolaryngology and oral-maxillofacial surgery coding lists for fracture procedures confirming 21465 as an open condylar fracture code with a 90‑day global period.}⁵⁸
^{4. ICD‑10‑CM resources (for example, S02.611-S02.619 series) that crosswalk condylar process fractures to CPT codes including 21465.}³
^{5. Maxillofacial trauma literature on condylar fracture management, including when open reduction and internal fixation are preferred over closed treatment (for example, bilateral or markedly displaced fractures).}⁴⁹⁻¹¹
^{6. CMS and payer global surgery policies describing 90‑day global packages and the inclusion of pre‑ and postoperative fracture care within the global period.}¹³¹⁴