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v1.0.0
ICD-10 Guide
DiagnosesFoot Infection

Foot Infection

ICD-10 Coding for Foot Infection(E11.621, L97.5-, L03.115)

PRIMARY SPECIALTYPodiatry
COMPLEXITYHigh
LAST UPDATED09/15/2025
Sam Tuffun, PT, DPT
Physical Therapist | Medical Coding & Billing Contributor

Diagnosis Overview

What is Foot Infection?
Essential facts and insights about Foot Infection

Key Clinical Considerations:

  • Redness, swelling, warmth, and pain in the affected area
  • Presence of pus or drainage from the wound
  • Fever or systemic signs of infection

Clinical Information

Clinical Criteria & Documentation Requirements

  • Patient history including duration and severity of symptoms
  • Description of the wound or infection site
  • Results of any imaging or lab tests performed

Coding Guidelines

Usage Guidelines & Examples

  • Usage guidelines: Use specific codes based on the type and location of the infection.
  • Common errors: Misclassifying the type of infection or not documenting the severity.

Code Exclusions

Important Exclusions

  • Osteomyelitis (consider separate coding)
  • Non-infectious conditions such as neuropathy or vascular issues.

Related ICD-10 Codes

Primary Codes
110.1
Tinea pedis (athlete's foot)
681.10
Cellulitis of unspecified foot
682.7
Abscess of foot
Ancillary Codes
Z79.4
Differential Codes
L89.-
E11.621
E11.621
if ulcer is due to diabetes.
L97.5-

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Podiatry

Specialty Applications

  • Diabetic patients, immunocompromised individuals, and those with poor circulation.
  • Outpatient clinics, emergency departments, and inpatient settings.

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

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

Documentation requirements?

Include detailed patient history, physical exam findings, and treatment plan.

Billing considerations?

Ensure accurate coding to reflect the severity and type of infection for appropriate reimbursement.