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ICD-10 Guide
ICD-10 CodesS02.640

S02.640

Billable

Fracture of ramus of mandible, unspecified side

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 S02.640 is a billable code used to indicate a diagnosis of fracture of ramus of mandible, unspecified side.

Key Diagnostic Point:

The ramus of the mandible is a vertical portion of the mandible that connects to the skull at the temporomandibular joint (TMJ). A fracture in this area can occur due to various mechanisms, including blunt trauma from falls, motor vehicle accidents, sports injuries, or physical altercations. Symptoms typically include pain, swelling, and difficulty in opening the mouth or chewing. Diagnosis is primarily through clinical examination and imaging studies such as X-rays or CT scans, which help confirm the fracture and assess its severity. Management often involves conservative treatment with pain control and dietary modifications, but surgical intervention may be necessary for displaced fractures or those causing functional impairment. Complications can include malocclusion, infection, or nonunion of the fracture. Accurate coding is essential for proper reimbursement and tracking of injury patterns.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Unspecified side may lead to ambiguity in documentation.
  • Variability in treatment approaches based on fracture type.
  • Potential for associated injuries requiring additional coding.
  • Need for precise documentation to support the diagnosis.

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury.
  • Failure to specify the side of the fracture.
  • Lack of imaging reports to support the diagnosis.
  • Coding without considering associated injuries.

Specialty Focus

Medical Specialties

Emergency Medicine

Documentation Requirements

Documentation must include a detailed account of the mechanism of injury, clinical findings, and any imaging performed.

Common Clinical Scenarios

Patients presenting with facial trauma from falls or assaults.

Billing Considerations

Ensure that the documentation reflects the urgency of the injury and any immediate interventions performed.

Surgery

Documentation Requirements

Operative reports must detail the surgical approach, fixation methods, and any complications encountered.

Common Clinical Scenarios

Surgical repair of displaced fractures or those with associated injuries.

Billing Considerations

Accurate coding of surgical procedures performed in conjunction with the fracture repair is essential.

Coding Guidelines

Inclusion Criteria

Use S02.640 When
  • Follow the ICD
  • CM guidelines for coding injuries, ensuring that the code reflects the specific nature of the fracture and any associated injuries
  • Documentation must support the diagnosis and treatment plan

Exclusion Criteria

Do NOT use S02.640 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

21010CPT Code

Closed treatment of mandibular fracture

Clinical Scenario

Used when a closed reduction is performed for a ramus fracture.

Documentation Requirements

Operative report must detail the procedure and any imaging used.

Specialty Considerations

Ensure that the surgical approach is clearly documented.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of fractures, improving the granularity of data collected on injury patterns and treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of fractures, improving the granularity of data collected on injury patterns and treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of fractures, improving the granularity of data collected on injury patterns and treatment outcomes.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the importance of specifying the side of the fracture?

Specifying the side of the fracture is crucial for accurate treatment planning and coding. It helps in understanding the injury's impact on function and guides surgical decisions if necessary.