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ICD-10 Guide
ICD-10 CodesL02.521

L02.521

Billable

Furuncle right hand

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

Code Description

ICD-10 L02.521 is a billable code used to indicate a diagnosis of furuncle right hand.

Key Diagnostic Point:

L02.521 refers to a furuncle (boil) located on the right hand, which is a painful, pus-filled bump that forms under the skin due to bacterial infection, most commonly caused by Staphylococcus aureus. Clinically, furuncles present as red, swollen nodules that may eventually rupture and drain pus. The anatomy involved includes the hair follicles and surrounding subcutaneous tissue. Disease progression can vary; if untreated, a furuncle may lead to further infection, abscess formation, or systemic complications. Diagnosis typically involves a physical examination and may include culture of the pus to identify the causative organism. Differential diagnoses include carbuncles, folliculitis, and other skin infections. Proper identification and management are crucial to prevent complications and ensure effective treatment.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Moderate, as it requires clinical evaluation and potential laboratory tests.
  • Treatment complexity: Moderate, as treatment may involve incision and drainage or antibiotics.
  • Documentation requirements: Moderate, necessitating detailed clinical notes and treatment plans.
  • Coding specificity: High, as it specifies the location and type of skin infection.

Audit Risk Factors

  • Common coding errors: Misidentifying the site or type of infection.
  • Documentation gaps: Incomplete clinical notes regarding the nature and treatment of the furuncle.
  • Billing challenges: Potential denials if the documentation does not support the diagnosis or treatment provided.

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: Primary Care

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

Furuncles can significantly impact patient quality of life due to pain and discomfort, leading to increased healthcare utilization. Understanding the epidemiology of skin infections, including furuncles, is vital for public health, as they can indicate broader issues such as hygiene practices and antibiotic resistance. Monitoring these conditions can help in developing quality measures aimed at reducing the incidence of skin infections.

ICD-9 vs ICD-10

Furuncles can significantly impact patient quality of life due to pain and discomfort, leading to increased healthcare utilization. Understanding the epidemiology of skin infections, including furuncles, is vital for public health, as they can indicate broader issues such as hygiene practices and antibiotic resistance. Monitoring these conditions can help in developing quality measures aimed at reducing the incidence of skin infections.

Reimbursement & Billing Impact

Reimbursement considerations include the complexity of treatment provided, such as whether incision and drainage were performed. Common denials may arise from insufficient documentation or incorrect coding of the site. Best practices include thorough clinical notes, clear treatment plans, and ensuring that the procedure codes align with the diagnosis code to avoid discrepancies during audits.

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 L02.521?

L02.521 specifically covers furuncles located on the right hand. It does not include other types of skin infections or furuncles located on different body parts.

When should L02.521 be used instead of related codes?

L02.521 should be used when documenting a furuncle specifically on the right hand. If the furuncle is on another body part, the appropriate site-specific code should be selected.

What documentation supports L02.521?

Documentation should include a detailed clinical examination, description of the lesion, treatment provided, and any laboratory results if cultures were taken.