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ICD-10 Guide
ICD-10 CodesL02.621

L02.621

Billable

Furuncle of right foot

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

Code Description

ICD-10 L02.621 is a billable code used to indicate a diagnosis of furuncle of right foot.

Key Diagnostic Point:

L02.621 refers to a furuncle (boil) located on the right foot, which is a painful, pus-filled bump that forms under the skin due to bacterial infection, typically caused by Staphylococcus aureus. Clinically, furuncles present as red, swollen nodules that may rupture and drain pus. The anatomy involved includes the hair follicles and surrounding skin and subcutaneous tissue. Disease progression can lead to the formation of multiple furuncles, known as carbuncles, if untreated. Diagnostic considerations include physical examination and, if necessary, culture of the pus to identify the causative organism. Patients may present with localized pain, tenderness, and systemic symptoms such as fever in severe cases. Proper identification and coding of this condition are crucial for effective treatment and management, as well as for accurate billing and reimbursement.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Diagnostic complexity: Moderate, as it requires clinical evaluation and possibly laboratory tests.
  • Treatment complexity: Moderate, as treatment may involve incision and drainage, antibiotics, and follow-up care.
  • Documentation requirements: Requires detailed documentation of symptoms, treatment, and follow-up.
  • Coding specificity: Specific to the location and type of skin infection.

Audit Risk Factors

  • Common coding errors: Misidentifying the site or type of infection.
  • Documentation gaps: Incomplete records of symptoms or treatment.
  • Billing challenges: Denials due to lack of specificity or insufficient 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

Furuncles can significantly impact patient quality of life due to pain and discomfort, and they may lead to more serious infections if not treated properly. Understanding the epidemiology of skin infections, including furuncles, is essential for public health initiatives aimed at reducing the incidence of bacterial skin infections. Effective management and coding of these conditions can improve healthcare utilization patterns and contribute to better health outcomes.

ICD-9 vs ICD-10

Furuncles can significantly impact patient quality of life due to pain and discomfort, and they may lead to more serious infections if not treated properly. Understanding the epidemiology of skin infections, including furuncles, is essential for public health initiatives aimed at reducing the incidence of bacterial skin infections. Effective management and coding of these conditions can improve healthcare utilization patterns and contribute to better health outcomes.

Reimbursement & Billing Impact

Reimbursement considerations may vary based on the complexity of the treatment provided, such as whether incision and drainage were performed. Common denials can occur if the documentation does not adequately reflect the severity of the condition or if the coding lacks specificity. Best practices include thorough documentation of the clinical findings, treatment plan, and follow-up care to support the medical necessity of the services rendered.

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 L02.621?

L02.621 specifically covers furuncles located on the right foot, which are localized skin infections that can arise from hair follicles. It does not cover other types of skin infections or lesions.

When should L02.621 be used instead of related codes?

L02.621 should be used when a furuncle is specifically diagnosed on the right foot. If the lesion is on another part of the body or if it is unspecified, other codes such as L02.619 may be more appropriate.

What documentation supports L02.621?

Documentation should include a detailed clinical examination, description of the lesion, treatment provided, and any laboratory results if cultures were taken. Clear notes on the location and symptoms are essential.