ICD-10 Guide

Abscess Right Leg

ICD-10 Coding for Abscess of the Right Leg(L02.415)

PRIMARY SPECIALTYEmergency Medicine

COMPLEXITYHigh

LAST UPDATED09/15/2025

Sam Tuffun, PT, DPT

Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Abscess Right Leg?

An abscess of the right leg is a localized collection of pus that occurs due to infection, typically caused by bacteria. It can arise from various etiologies, including trauma, insect bites, or underlying skin conditions. Key clinical points include: 1) Abscesses may present with redness, swelling, and tenderness in the affected area. 2) Fever may accompany systemic infection. 3) Drainage is often necessary for resolution. 4) Patients with diabetes or immunocompromised states are at higher risk. The pathophysiology involves the body's immune response to infection, leading to the accumulation of pus. Clinically, patients may report pain and warmth in the area, and upon examination, a fluctuant mass may be palpated. Typical use cases for the ICD-10 code L02.415 include emergency department visits for acute abscess drainage or evaluation of leg infections.

Key Clinical Considerations:

Diagnosis requires clinical evidence of a localized area of fluctuance, erythema, and tenderness in the right leg.
Signs include localized swelling, warmth, and possible drainage of purulent material; symptoms may include pain and fever.
Resolution criteria include complete drainage of the abscess and resolution of systemic symptoms.
Laboratory findings may show elevated white blood cell count; imaging may be used to assess the extent of the abscess.

Clinical Information

Clinical Criteria & Documentation Requirements

Documentation must include the location, size, and characteristics of the abscess, as well as any systemic symptoms.
Compliant documentation: 'Patient presents with a 3 cm abscess on the right leg with purulent drainage.' Non-compliant: 'Patient has a sore leg.'
Template phrases: 'Abscess located on the right leg, measuring [size], with [symptoms].'
Medical necessity requires documentation of the need for drainage or surgical intervention.

Coding Guidelines

Usage Guidelines & Examples

Use L02.415 when treating a localized abscess on the right leg; for example, a patient with a painful, swollen area requiring incision and drainage.
Do NOT use this code for cellulitis without abscess formation or for abscesses located on other body parts.
Correct usage: L02.415 for a right leg abscess; incorrect: L02.415 for a left leg abscess.
Common errors include misidentifying the location of the abscess; ensure accurate documentation of the affected leg.

Code Exclusions

Important Exclusions

Excluded conditions include deep vein thrombosis (DVT) and cellulitis without abscess; rationale is based on different treatment protocols.
Alternative codes for exclusions include I82.90 for DVT and L03.90 for cellulitis.
Common exclusion errors involve misclassifying cellulitis as an abscess; ensure accurate clinical assessment.
Certain conditions are excluded to maintain specificity in coding and ensure appropriate treatment pathways.

Specialty Focus

Primary Specialty

Emergency Medicine

Specialty Applications

This diagnosis applies to patients with localized infections in the right leg, particularly those requiring surgical intervention.
Appropriate in emergency settings where abscess drainage is performed.
Applicable in both inpatient and outpatient settings, particularly in emergency medicine.
Specialty-specific considerations include the need for surgical documentation in surgical specialties.

Coding Complexity

High Complexity

This diagnosis requires careful attention to:

Comprehensive clinical documentation
Accurate code selection based on clinical criteria
Proper exclusion considerations
Specialty-specific coding guidelines

Documentation

Documentation Templates

Template 1

Template: 'Abscess diagnosed based on clinical findings of [size] and [symptoms].'

Template 2

Template: 'Patient presents with [symptoms] consistent with abscess of the right leg.'

Template 3

Template: 'Diagnostic criteria met: [specific findings such as fluctuant mass].'

Template 4

Template: 'Treatment plan includes incision and drainage for abscess of the right leg.'

Billing Information

Billing Considerations

Ensure proper documentation for billing
Verify code specificity requirements
Check for any additional codes needed
Review payer-specific guidelines

Common Issues

Insufficient clinical documentation
Incorrect code selection
Missing supporting diagnoses
Timing and frequency documentation

Frequently Asked Questions

What documentation is required for this code?

Detailed documentation of the abscess characteristics, treatment plan, and clinical findings.

When should this code be used vs similar codes?

Use L02.415 for abscesses specifically; use L03.90 for cellulitis without abscess.

What are common billing issues with this code?

Issues may arise from lack of documentation supporting the need for drainage; ensure all clinical findings are recorded.

What procedures are commonly associated?

Related CPT codes include 10060 for incision and drainage of abscess.

What is Abscess Right Leg?

Key Clinical Considerations:

Diagnosis requires clinical evidence of a localized area of fluctuance, erythema, and tenderness in the right leg.
Signs include localized swelling, warmth, and possible drainage of purulent material; symptoms may include pain and fever.
Resolution criteria include complete drainage of the abscess and resolution of systemic symptoms.
Laboratory findings may show elevated white blood cell count; imaging may be used to assess the extent of the abscess.

Abscess Right Leg

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Template 1

Template 2

Template 3

Template 4

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What documentation is required for this code?

When should this code be used vs similar codes?

What are common billing issues with this code?

What procedures are commonly associated?

Abscess Right Leg

Diagnosis Overview

Key Clinical Considerations:

Clinical Information

Clinical Criteria & Documentation Requirements

Coding Guidelines

Usage Guidelines & Examples

Code Exclusions

Important Exclusions

Related ICD-10 Codes

Related CPT Codes

Specialty Focus

Primary Specialty

Specialty Applications

Coding Complexity

Documentation

Documentation Templates

Template 1

Template 2

Template 3

Template 4

Billing Information

Billing Considerations

Common Issues

Frequently Asked Questions

What documentation is required for this code?

When should this code be used vs similar codes?

What are common billing issues with this code?

What procedures are commonly associated?