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ICD-10 Guide
ICD-10 CodesL02.539

L02.539

Billable

Carbuncle of unspecified hand

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 L02.539 is a billable code used to indicate a diagnosis of carbuncle of unspecified hand.

Key Diagnostic Point:

A carbuncle is a painful cluster of boils that form a connected area of infection under the skin, typically caused by Staphylococcus aureus bacteria. The condition often presents as a red, swollen area on the skin, which may be warm to the touch and filled with pus. In the case of a carbuncle of the unspecified hand, the infection can occur in any part of the hand, including the fingers, palms, or back of the hand. The disease progression may start with a small, painful lump that gradually enlarges, leading to the formation of multiple pus-filled heads. Patients may experience systemic symptoms such as fever and malaise if the infection is severe. Diagnostic considerations include a thorough clinical examination and, if necessary, culture of the pus to identify the causative organism. Treatment typically involves incision and drainage of the carbuncle, along with antibiotics if there is evidence of systemic infection or if the patient is immunocompromised. Proper hygiene and wound care are essential to prevent recurrence.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Requires clinical evaluation and possibly laboratory tests.
  • Treatment complexity: May involve surgical intervention and antibiotic therapy.
  • Documentation requirements: Detailed clinical notes and treatment plans are necessary.
  • Coding specificity: Requires accurate identification of the site and type of infection.

Audit Risk Factors

  • Common coding errors: Misidentifying the site or type of infection.
  • Documentation gaps: Incomplete clinical notes regarding the extent of the infection.
  • Billing challenges: Potential denials due to lack of specificity in documentation.

Specialty Focus

Medical Specialties

Primary medical specialty: Dermatology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Secondary specialty: Infectious Disease

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Carbuncles can significantly impact patient quality of life due to pain and discomfort, and they may lead to increased healthcare utilization if complications arise. Understanding the epidemiology of skin infections, including carbuncles, is crucial for public health initiatives aimed at reducing the incidence of skin and soft tissue infections. Effective management can improve patient outcomes and reduce the burden on healthcare systems.

ICD-9 vs ICD-10

Carbuncles can significantly impact patient quality of life due to pain and discomfort, and they may lead to increased healthcare utilization if complications arise. Understanding the epidemiology of skin infections, including carbuncles, is crucial for public health initiatives aimed at reducing the incidence of skin and soft tissue infections. Effective management can improve patient outcomes and reduce the burden on healthcare systems.

Reimbursement & Billing Impact

Reimbursement may depend on the complexity of the procedure performed, such as incision and drainage. Common denials may arise if documentation does not clearly support the diagnosis or if the procedure is not adequately justified. Coders should ensure that all relevant details are captured to avoid billing challenges.

Resources

Clinical References

  • •
    ICD-10 Official Guidelines for L00-L99
  • •
    Clinical Documentation Requirements

Coding & Billing References

  • •
    ICD-10 Official Guidelines for L00-L99
  • •
    Clinical Documentation Requirements

Frequently Asked Questions

What specific conditions are covered by L02.539?

L02.539 covers carbuncles located on the hand that are not otherwise specified. It includes infections that may arise from hair follicles or skin glands, leading to localized abscess formation.

When should L02.539 be used instead of related codes?

L02.539 should be used when the carbuncle is specifically located on the hand and no further specification is available. If the carbuncle is located on a different body part, a different code should be selected.

What documentation supports L02.539?

Documentation should include a detailed description of the lesion, the location on the hand, any associated symptoms, and the treatment provided. Clinical notes should also reflect the rationale for the diagnosis.