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ICD-10 Guide
ICD-10 CodesS81.85

S81.85

Billable

Open bite of lower leg

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

Code Description

ICD-10 S81.85 is a billable code used to indicate a diagnosis of open bite of lower leg.

Key Diagnostic Point:

An open bite of the lower leg refers to a wound that penetrates the skin and underlying tissues, typically resulting from a traumatic injury. This type of injury can occur due to various mechanisms, including animal bites, human bites, or lacerations from sharp objects. The lower leg encompasses the area from the knee to the ankle, including the tibia and fibula. Open bites can lead to significant complications, such as infection, delayed healing, and potential damage to underlying structures, including muscles, nerves, and blood vessels. In cases where the bite is deep, it may also involve fractures of the tibia or fibula, ligament tears, or other orthopedic injuries. Treatment often requires surgical intervention to clean the wound, repair any damaged tissues, and stabilize fractures if present. The complexity of managing an open bite injury increases with the involvement of orthopedic structures, necessitating a multidisciplinary approach for optimal recovery.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variety of potential underlying injuries (fractures, ligament tears)
  • Need for surgical intervention and reconstruction
  • Risk of infection and complications
  • Variability in documentation based on injury severity

Audit Risk Factors

  • Inadequate documentation of the mechanism of injury
  • Failure to document associated injuries (e.g., fractures, ligament tears)
  • Inconsistent coding of open versus closed injuries
  • Lack of clarity in surgical notes regarding the extent of the injury

Specialty Focus

Medical Specialties

Orthopedic Surgery

Documentation Requirements

Detailed operative notes, imaging studies, and follow-up assessments are essential for accurate coding.

Common Clinical Scenarios

Fractures associated with open bites, ligament repairs, and reconstructive surgeries.

Billing Considerations

Ensure clear documentation of all procedures performed and any complications encountered during treatment.

Emergency Medicine

Documentation Requirements

Thorough documentation of the initial assessment, treatment provided, and any referrals made.

Common Clinical Scenarios

Initial evaluation and management of open bite injuries, including wound care and stabilization.

Billing Considerations

Document the mechanism of injury and any immediate interventions performed to support coding.

Coding Guidelines

Inclusion Criteria

Use S81.85 When
  • According to ICD
  • 10 guidelines, S81
  • 85 should be used when the documentation specifies an open bite of the lower leg
  • It is important to ensure that the injury is not classified as a closed injury or a simple laceration
  • The code should be supported by clinical documentation detailing the nature and extent of the injury

Exclusion Criteria

Do NOT use S81.85 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

12001CPT Code

Simple repair of superficial wounds

Clinical Scenario

Used for initial treatment of an open bite wound requiring closure.

Documentation Requirements

Document the size and depth of the wound, as well as the technique used.

Specialty Considerations

Orthopedic surgeons may need to provide additional details if associated fractures are present.

27814CPT Code

Reconstruction of lower leg

Clinical Scenario

Used when significant soft tissue reconstruction is necessary following an open bite injury.

Documentation Requirements

Detailed operative notes outlining the extent of reconstruction and any grafts used.

Specialty Considerations

Ensure that the orthopedic specialty is clearly documented to support the procedure.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of injuries like open bites, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of injury types and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of injuries like open bites, improving the accuracy of data collection and reimbursement processes. It has also facilitated better tracking of injury types and outcomes.

Reimbursement & Billing Impact

reimbursement processes. It has also facilitated better tracking of injury types and 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 difference between an open bite and a laceration?

An open bite specifically refers to a wound caused by a bite, which may involve deeper tissue damage, while a laceration can be caused by various sharp objects and may not penetrate as deeply.