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ICD-10 Guide
ICD-10 CodesS81.021

S81.021

Billable

Laceration with foreign body, right knee

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/26/2025

Code Description

ICD-10 S81.021 is a billable code used to indicate a diagnosis of laceration with foreign body, right knee.

Key Diagnostic Point:

S81.021 refers to a laceration of the right knee that is complicated by the presence of a foreign body. This condition typically arises from traumatic injuries, such as falls, sports injuries, or accidents, where sharp objects penetrate the skin and underlying tissues. The knee joint is a complex structure composed of bones, ligaments, tendons, and cartilage, making it susceptible to various injuries. In cases of laceration, the foreign body can cause additional damage to the surrounding soft tissues, potentially leading to complications such as infection, delayed healing, or joint dysfunction. Treatment often involves surgical intervention to remove the foreign body, repair the laceration, and assess for any associated injuries to the ligaments or cartilage. Proper documentation is crucial to capture the extent of the injury, the nature of the foreign body, and any additional procedures performed, such as debridement or reconstruction of the knee structures. Accurate coding ensures appropriate reimbursement and reflects the complexity of the injury and treatment provided.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Presence of foreign body complicates the injury
  • Potential for associated injuries (ligament tears, fractures)
  • Variability in treatment approaches (surgical vs. conservative)
  • Need for detailed documentation of the foreign body and injury extent

Audit Risk Factors

  • Inadequate documentation of the foreign body type and location
  • Failure to document associated injuries (e.g., fractures, ligament tears)
  • Incorrect coding of the laceration depth or complexity
  • Lack of clarity on the treatment provided (surgical vs. non-surgical)

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative notes describing the laceration, foreign body removal, and any reconstructive procedures performed.

Common Clinical Scenarios

Patients presenting with traumatic knee injuries from sports, falls, or accidents requiring surgical intervention.

Billing Considerations

Ensure accurate coding of any additional procedures performed, such as ligament repair or fracture fixation.

Emergency Medicine

Documentation Requirements

Thorough documentation of the mechanism of injury, initial assessment, and any immediate interventions performed.

Common Clinical Scenarios

Patients with acute knee injuries presenting to the emergency department with lacerations and foreign bodies.

Billing Considerations

Document the patient's vital signs and any imaging studies performed to assess for associated injuries.

Coding Guidelines

Inclusion Criteria

Use S81.021 When
  • According to ICD
  • 10 coding guidelines, S81
  • 021 should be used when the laceration is specifically noted to involve a foreign body
  • Coders must ensure that the documentation supports the diagnosis and includes details about the foreign body and any associated injuries

Exclusion Criteria

Do NOT use S81.021 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12031CPT Code

Repair of laceration, knee

Clinical Scenario

Used when performing a surgical repair of the laceration with foreign body removal.

Documentation Requirements

Operative report detailing the laceration repair and foreign body extraction.

Specialty Considerations

Orthopedic surgeons must document the extent of the injury and any additional procedures performed.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity improves the accuracy of medical records and enhances the ability to track and analyze injury patterns.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity improves the accuracy of medical records and enhances the ability to track and analyze injury patterns.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of injuries, including those with foreign bodies. This specificity improves the accuracy of medical records and enhances the ability to track and analyze injury patterns.

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 types of foreign bodies are typically associated with S81.021?

Common foreign bodies include metal fragments, glass shards, and organic materials like thorns or splinters, which can complicate the laceration and require surgical intervention.