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21450

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🦷 CPT 21450 — Closed Treatment of Mandibular Fracture; Without Manipulation

Quick Reference

wRVU: [verify] | Global Period: 090 (90 days — major procedure) | Assistant Payable: ✅ Typically allowed for operative fracture cases; rarely applicable when no OR services are performed | Bilateral Indicator: 0

📋 Clinical Description

CPT 21450 describes closed treatment of a mandibular (lower jaw) fracture without manipulation — non‑operative management in which the physician confirms the fracture clinically and radiographically, but does not manually reduce or realign the bony fragments.¹³ Instead, treatment focuses on observation, pain control, dietary modification (for example, soft or liquid diet), and activity restrictions; basic external support such as bandages or simple stabilization may be used, but no formal closed reduction is performed.

Mandibular fracture (ICD‑10‑CM S02.6‑ family) is a break in the lower jaw that can occur at various anatomic sites (symphysis, angle, body, condyle) from blunt trauma such as assaults, falls, or motor‑vehicle collisions.¹⁴ Untreated or unstable fractures can lead to malocclusion, chronic pain, infection, airway compromise, or nonunion. Closed treatment without manipulation is appropriate for nondisplaced or minimally displaced fractures with intact occlusion where the natural alignment is acceptable and the risk of late displacement is low. When malocclusion, displacement, or instability is present, codes for closed treatment with manipulation (21451) or interdental fixation (21453) or open reduction (21461-21462, 21465, etc.) are selected instead.³

This procedure may be performed in the following clinical contexts:

  • Isolated, nondisplaced mandibular fracture with normal occlusion — conservative management when the fracture line is stable and alignment is acceptable.
  • Low‑energy trauma with minor cortical disruption — for example, sports or fall injuries where imaging confirms a non‑displaced linear fracture.
  • Medically complex patient in whom operative risk outweighs benefits — when comorbidities or anesthesia risk favor conservative management over operative reduction.
  • Pediatric or geriatric patients with stable fractures — when growth, dentition, or bone quality make non‑manipulative treatment clinically reasonable.
  • Multi‑trauma cases where the mandible fracture is stable — managed non‑operatively while operative attention focuses on more urgent injuries.

🔬 Anatomical & Procedural Considerations

Variant / SituationMechanism / Key StepsKey Notes / Coding Impact
Simple nondisplaced linear fractureClinical exam and imaging (panoramic radiograph, CT) confirm a linear fracture without displacement or malocclusion; patient is managed with analgesia, soft diet, and close follow‑up.Classic scenario for 21450 — no manipulation or reduction is performed. The physician documents fracture location, absence of malocclusion, and the decision for conservative treatment.
Multiple minimally displaced fractures with intact occlusionMore than one fracture line is present, but occlusion remains acceptable and the fractures are judged stable enough for non‑operative management.21450 may still be appropriate when all fractures are treated without manipulation. If any segment is manually reduced or if interdental fixation is applied, codes for manipulation or fixation are required instead.
Emergency department initial managementED provider or oral/maxillofacial consultant evaluates suspected mandible fracture, orders imaging, and determines that no immediate reduction is necessary; patient is discharged with instructions and follow‑up.21450 can be reported by the treating surgeon for the definitive non‑manipulative fracture care, separate from the E/M service when criteria for global fracture care transfer are met. Ensure documentation clarifies that the provider is assuming fracture management, not just performing a one‑time consult.
Inpatient conservative managementHospitalized trauma patient with mandible fracture that remains stable on serial exams and imaging; no manipulation or fixation is done, but the admitting team follows the fracture clinically.In this setting, 21450 reflects the professional service of closed treatment without manipulation. Facility coding uses ICD‑10‑CM and any PCS codes if a qualifying procedure (for example, immobilization) is performed; otherwise only diagnostic and supportive care are coded.

Clinical Pearl

Code 21450 only when the treating physician is providing definitive fracture management and has determined that no manipulation is required. If the operative note or ED documentation describes jaw repositioning, occlusal adjustment, or intermaxillary fixation, select 21451 (closed treatment with manipulation) or 21453 (closed treatment with interdental fixation) as appropriate. For isolated ED consultations without assumption of ongoing fracture care, an E/M code rather than 21450 is often more accurate.

✅ Procedure Includes

The following services are generally considered included in 21450:

  • Initial and subsequent evaluation of the fracture as part of the global fracture care package once the provider assumes responsibility for definitive management.
  • Review and interpretation of imaging (separate professional radiology codes are typically not reported by the same provider for routine fracture care).
  • Clinical decision‑making that the fracture can safely be managed without manipulation, including assessment of occlusion, airway, and neurosensory status.
  • Patient counseling on diet (soft/liquid), activity restriction, oral hygiene, and warning signs that would require re‑evaluation.
  • Routine post‑fracture follow‑up within the 90‑day global period to monitor healing, excluding visits for unrelated conditions.

❌ Excludes / Do Not Report Together

CodeDescriptionRelationship to 21450
21451Closed treatment of mandibular fracture; with manipulationUse when the physician manually realigns the fracture segments and restores occlusion. If any manipulation is performed, report 21451 instead of 21450 for the affected fracture.
21453Closed treatment of mandibular fracture; with interdental fixationReport when intermaxillary fixation (for example, wiring jaws together with arch bars) is applied as part of closed treatment. Do not report 21450 in addition to 21453 for the same fracture episode.
21452Percutaneous treatment of mandibular fracture, with external fixationRepresents a more invasive percutaneous technique with external fixation; includes fracture stabilization and supersedes 21450 for that fracture site.
21461Open treatment of mandibular fracture; without interdental fixationSelected when the fracture is treated via an open approach without interdental fixation. Not reported with 21450 for the same fracture and same session.
21462Open treatment of mandibular fracture; with interdental fixationMore extensive open treatment with fixation in addition to interdental fixation. Do not combine with 21450 for the same fracture site.
E/M codes (9928x / 9921x / 9920x)Emergency / office visitsSeparately reportable only when the requirements for fracture global care transfer are not met or when a significant, separately identifiable E/M service is performed outside the typical fracture care (for example, a different, unrelated problem), with modifier ‑25 appended to the E/M code as appropriate.

Bundling Alert — Global Period is 090, Not 000

With a 90‑day global period, routine follow‑up visits related to the mandibular fracture are included in the 21450 payment and not separately billable. Unrelated E/M services during the global period require modifier ‑24 on the E/M code and clear documentation of a distinct, non‑fracture diagnosis. When additional fracture procedures are performed on the same mandible during the global period (for example, conversion to open treatment), apply modifiers such as ‑58, ‑78, or ‑79 as clinically and temporally appropriate based on whether the subsequent procedure is staged, related, or unrelated.

🩺 Common ICD‑10‑CM Pairings

Primary Mandibular Fracture Diagnosis Codes

ICD-10 CodeDescriptionHCC?Clinical Notes
S02.600AFracture of unspecified part of body of mandible, unspecified side, initial encounter for closed fractureNoUse when the fracture site and side are not specified but documentation supports an initial closed fracture encounter managed non‑operatively. Query whenever the specific site (symphysis, angle, body, condyle) or side can be clarified.
S02.60XAFracture of mandible, unspecified site, initial encounter for closed fractureNoHigher‑level unspecified site; prefer site‑specific codes (for example, S02.65XA, S02.66XA) when available.
S02.65XAFracture of angle of mandible, initial encounter for closed fractureNoUse when imaging shows a fracture at the angle; appropriate for nondisplaced angle fractures treated conservatively with 21450.
S02.66XAFracture of symphysis of mandible, initial encounter for closed fractureNoFor symphysis fractures at the midline; can often be managed non‑operatively if alignment and occlusion are acceptable.
S02.69XAFracture of mandible of other specified site, initial encounter for closed fractureNoUse when the fracture involves another specified mandible site (for example, ramus, condylar base) and is treated without manipulation.

Subsequent and Sequela Codes

ICD-10 CodeDescriptionHCC?Clinical Notes
S02.600DFracture of unspecified part of body of mandible, unspecified side, subsequent encounter for fracture with routine healingNoUse for routine follow‑up visits documenting normal healing during the global period, if diagnosis specificity remains unchanged.
S02.600GFracture of unspecified part of body of mandible, unspecified side, subsequent encounter for fracture with delayed healingNoUse when radiographic or clinical evidence indicates delayed healing requiring prolonged restrictions or additional management.
S02.69XSFracture of mandible of other specified site, sequelaNoUse to capture long‑term sequelae (for example, malocclusion, chronic pain, nonunion) after healing is complete and 21450’s global period has ended.

Coding Specificity Reminder

For mandibular fractures, ICD‑10‑CM expects site, laterality (when defined), and encounter type (initial, subsequent with routine healing, delayed healing, nonunion, or sequela). When the imaging report specifies a particular site such as angle or symphysis, avoid generic S02.60‑ codes; instead, select the most specific site‑ and encounter‑specific code (for example, S02.65XA, S02.66XA). If the clinical record does not clearly state the site, side, or encounter type, query the provider to support accurate diagnosis coding and trauma registry reporting.

🏥 MS‑DRG and Inpatient Considerations

Inpatient Coding Reminder

On the facility side, ICD‑10‑CM and ICD‑10‑PCS codes — not 21450 — determine MS‑DRG grouping. Many patients with isolated, stable mandibular fractures are managed as outpatients or short‑stay observation; in those settings, the hospital may have no PCS procedure code if no qualifying immobilization, fixation, or operative intervention occurs. In full trauma admissions, mandible fractures coded with S02.6‑ series diagnoses group into head and neck trauma DRGs, and any OR procedures (for example, open reduction) will generally drive DRG assignment more than conservative closed treatment without manipulation.

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

Note

Purely conservative closed treatment without manipulation (for example, observation, soft diet, analgesia) typically does not generate a separate ICD‑10‑PCS procedure code. PCS coding comes into play when there is a qualifying procedure such as traction, external fixation, or operative open reduction. In such cases, PCS root operations like Reposition (for reduction) or External Fixation/Immobilization may be used, but these correspond to codes in the 21451/21453/21452/21461/21462 range rather than 21450.

For reference:

  • No PCS code — simple closed treatment without manipulation, traction, or device placement; only diagnosis and imaging are coded.
  • Reposition of mandible, open or percutaneous approach — applies when the fracture is actively reduced (aligned); conceptually aligned with 21451 or open treatment codes rather than 21450.
  • Immobilization of mandible — rare; may apply if explicit immobilization devices (beyond routine care) are placed for a hospitalized patient.

📝 Coding Examples

Example 1 — Emergency Department: Isolated Nondisplaced Symphysis Fracture

Clinical Scenario:
A 28‑year‑old male presents to the ED after a fistfight with chin pain and difficulty chewing. Examination shows mild tenderness at the mandibular symphysis but normal occlusion and no step‑off. CT scan demonstrates a nondisplaced symphysis fracture without malocclusion or segmental displacement. The on‑call oral and maxillofacial surgeon evaluates the patient, determines that no manipulation or fixation is needed, and recommends a soft diet, analgesia, and outpatient follow‑up. The surgeon explicitly documents assumption of fracture care and the decision for closed treatment without manipulation.

FieldCodeRationale
CPT21450Surgeon provides definitive closed treatment of a mandibular fracture without manipulation or fixation.
PDxS02.66XAFracture of symphysis of mandible, initial encounter for closed fracture — specific to the documented fracture site and encounter type.

Note

If the ED physician only suspects fracture and refers the patient to an outpatient specialist without assuming fracture care, the ED service is better represented by an E/M code. Once a surgeon assumes global fracture care and documents the treatment plan (even if non‑operative), 21450 is appropriate.

Example 2 — Inpatient Trauma: Stable Angle Fracture Managed Conservatively

Clinical Scenario:
A 65‑year‑old female is admitted after a motor‑vehicle collision with multiple injuries, including a minimally displaced fracture of the angle of the mandible on CT. An oral and maxillofacial surgeon evaluates her and notes acceptable occlusion, stable fracture alignment, and significant cardiopulmonary comorbidities that increase operative risk. The surgeon documents a plan for closed treatment without manipulation, recommending a soft diet, close in‑hospital monitoring, and delayed outpatient follow‑up with repeat imaging.

FieldCodeRationale
CPT21450Represents non‑operative closed treatment of the mandibular fracture without manipulation as the definitive management plan.
PDxS02.65XAFracture of angle of mandible, initial encounter for closed fracture, matches imaging and clinical documentation.
SDxS02.600DSubsequent encounter code may replace the initial encounter code in later follow‑up documentation as the fracture progresses to routine healing.

Warning

If at any point the fracture becomes displaced or malocclusion develops and the surgeon performs a closed reduction, percutaneous fixation, or open reduction, subsequent operative care should be coded with the appropriate 21451/21453/21452/21461/21462 code family and the correct modifier (for example, ‑58 for staged / planned, ‑78 for unplanned return to the OR for related procedure).

⚠️ Common Coding Pitfalls

  • Using 21450 when manipulation is documented: Any description of manual reduction, occlusal adjustment, or active repositioning of fracture fragments supports 21451 (with manipulation) or an open treatment code, not 21450. Review the operative or ED note carefully for terms like “reduced,” “realigned,” or “occlusion restored.”

  • Reporting 21450 when interdental fixation is placed: When intermaxillary fixation or arch bars are applied to stabilize the mandible, closed treatment with interdental fixation (21453) is usually the correct code. Do not separately report 21450 for the same fracture episode and site when fixation is performed.

  • Treating 21450 as a minor (0‑ or 10‑day) global: Mandibular fracture treatment codes including 21450 carry a 90‑day global period on many fee schedules. Failing to track the 90‑day window can lead to inappropriate separate billing for routine follow‑up, creating overpayment and audit risk.

  • Defaulting to unspecified S02.60‑ codes when site is documented: Radiology reports often specify the exact fracture location — angle, symphysis, body, condyle — and laterality when applicable. Use specific codes such as S02.65XA or S02.66XA when documented and reserve unspecified codes for truly unknown sites. Query when documentation is ambiguous.

  • Confusion about when global fracture care begins: Global fracture care and 21450 reporting begin when the physician assumes responsibility for ongoing fracture management, not at every visit where a fracture is mentioned. A one‑time consult with no assumption of follow‑up care is often better represented by an E/M code alone.

📎 Sources

1. AMA CPT 2025 Professional Edition (Fracture and/or Dislocation Procedures on the Head code family, including 21450-21462).
2. ENT / AAO‑HNS “Clinical Indicators: Mandibular Fracture” tables showing 90‑day global periods for 21450 and related mandibular fracture codes.
3. AAPC and specialty coding guidance on mandibular fracture code selection (21450 vs 21451 vs 21453 vs open treatment codes).
4. CMS RBRVS/Medicare Physician Fee Schedule files and state RBRVS tables confirming 90‑day global period assignment and physician‑service status for 21450.
5. ICD‑10‑CM code set and official guidelines — S02.6‑ Fracture of mandible family with site‑, laterality‑, and encounter‑specific subcodes (for example, S02.600A, S02.65XA, S02.66XA, S02.69XA).
6. ICD‑10‑PCS Official Guidelines for Coding and Reporting, guidance on coding (or not coding) conservative fracture management without manipulation or device placement.

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