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L03.129
ICD-10-CM
Cellulitis of Foot

Learn about cellulitis of foot (foot cellulitis) diagnosis, including clinical documentation, ICD-10 codes, treatment, and management. This comprehensive guide covers infection of foot skin symptoms, causes, and best practices for healthcare professionals involved in medical coding and clinical care. Find information on diagnosing and documenting cellulitis of the foot for accurate medical records.

Also known as

Foot Cellulitis
Infection of Foot Skin

Diagnosis Snapshot

Key Facts
  • Definition : Bacterial skin infection affecting the foot, often involving deeper tissues.
  • Clinical Signs : Redness, swelling, warmth, pain, tenderness, and sometimes blisters or pus.
  • Common Settings : Trauma, athlete's foot, diabetes, weakened immune system.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC L03.129 Coding
L03.1

Cellulitis of lower leg and foot

Bacterial skin infection affecting the lower leg and foot.

L00-L08

Infections of the skin and subcutaneous tissue

Infections affecting skin and underlying tissue, excluding necrotizing fasciitis.

A46

Erysipelas

A distinct type of superficial cellulitis caused by Streptococcus bacteria.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the cellulitis of the foot specified as due to Streptococcus?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Bacterial skin infection of the foot
Foot abscess with localized pus collection
Deeper soft tissue infection of the foot

Documentation Best Practices

Documentation Checklist
  • Document laterality (left or right foot)
  • Describe wound characteristics (size, depth, etc.)
  • Note presence/absence of purulence, erythema, edema
  • Document systemic symptoms (fever, chills, etc.)
  • Specify infectious agent if known (e.g., Staphylococcus aureus)

Coding and Audit Risks

Common Risks
  • Unspecified Laterality

    Coding lacks laterality (right, left, bilateral), impacting reimbursement and data accuracy. CDI should query for clarification.

  • Unconfirmed Diagnosis

    Cellulitis documentation may be insufficient. CDI should verify signs/symptoms and rule out other conditions for accurate coding.

  • Missing Infection Site

    Foot cellulitis lacks specific site details (e.g., toe, heel). Accurate coding requires precise location for proper treatment and reimbursement.

Mitigation Tips

Best Practices
  • Prompt antibiotic therapy ICD-10 L03.1 CDI best practice
  • Elevate infected foot, optimize local wound care SNOMED CT 733960004
  • Control comorbidities: diabetes, edema for compliant care
  • Debridement if necrotic tissue present, document thoroughly
  • Prevent recurrence: hygiene, proper footwear, skin checks

Clinical Decision Support

Checklist
  • Verify localized redness, swelling, and tenderness in the foot.
  • Confirm absence of deeper infection (e.g., abscess, osteomyelitis).
  • Document fever, lymphadenopathy, and other systemic signs.
  • Rule out alternative diagnoses: DVT, gout, contact dermatitis.

Reimbursement and Quality Metrics

Impact Summary
  • Cellulitis of foot reimbursement impacts proper ICD-10-CM L03 code assignment for accurate claims processing.
  • Coding accuracy for foot cellulitis impacts hospital reporting metrics like MS-DRG assignment and case mix index.
  • Accurate foot cellulitis diagnosis coding affects quality metrics related to infection control and patient outcomes.
  • Proper documentation of foot cellulitis, including laterality, optimizes reimbursement and severity level assignment.

Streamline Your Medical Coding

Let S10.AI help you select the most accurate ICD-10 codes. Our AI-powered assistant ensures compliance and reduces coding errors.

Frequently Asked Questions

Common Questions and Answers

Q: What are the most effective evidence-based antibiotic treatment options for moderate cellulitis of the foot in adults with no known drug allergies?

A: For moderate cellulitis of the foot in adults without drug allergies, oral antibiotics like cephalexin, dicloxacillin, or clindamycin are generally first-line treatments. These target the common causative bacteria, such as Staphylococcus and Streptococcus species. For patients with penicillin allergies, clindamycin or trimethoprim-sulfamethoxazole are suitable alternatives. The duration of antibiotic therapy typically ranges from 5 to 10 days, or until the infection resolves clinically. It's crucial to monitor patients for treatment response and adjust antibiotics as needed based on culture results if obtained. Consider implementing a standardized cellulitis treatment pathway to ensure consistent and optimal patient management. Explore how our platform can help streamline antibiotic stewardship efforts.

Q: How can I differentiate between cellulitis of the foot and a deep vein thrombosis (DVT) in a patient presenting with leg swelling and erythema?

A: Differentiating between cellulitis of the foot and a DVT can be challenging as both present with overlapping symptoms like leg swelling and erythema. Key clinical features to consider include unilateral vs. bilateral presentation, presence of fever, pain characteristics (sharp vs. dull), and the presence of risk factors for DVT like recent surgery or immobilization. Physical examination findings like palpable cords, Homan's sign (although not highly reliable), and increased skin temperature may suggest a DVT. D-dimer testing can be helpful, but it has low specificity. Ultrasound is the gold standard for DVT diagnosis. If DVT is suspected, immediate anticoagulation is crucial. Learn more about best practices for accurate DVT diagnosis and management to avoid diagnostic errors.

Quick Tips

Practical Coding Tips
  • Code L03.1 for foot cellulitis
  • Document infection site, depth
  • Specify if diabetic foot ulcer
  • Query physician if unclear
  • Consider comorbidities

Documentation Templates

Patient presents with complaints consistent with cellulitis of the right foot.  Onset reported as three days ago, characterized by progressively worsening erythema, edema, and tenderness to palpation.  The affected area extends from the dorsum of the foot to the second metatarsal, exhibiting localized warmth and induration.  Patient denies any history of trauma, insect bites, or open wounds to the area.  Review of systems reveals subjective fever, chills, and malaise.  Vital signs show elevated temperature of 100.4 degrees Fahrenheit, heart rate of 92 beats per minute, and respiratory rate of 18 breaths per minute.  Peripheral pulses are palpable and strong.  No lymphangitis or lymphadenopathy noted.  Differential diagnosis includes foot infection, soft tissue infection, erysipelas, and deep vein thrombosis.  Based on clinical presentation and examination findings, the diagnosis of cellulitis of the foot is established.  Treatment plan includes oral antibiotics, elevation of the affected extremity, and close monitoring for signs of clinical improvement or complications such as abscess formation or necrotizing fasciitis.  Patient education provided on wound care, infection prevention, and the importance of follow-up.  ICD-10 code L03.115, Cellulitis of right foot, assigned.  Patient advised to return for re-evaluation in 72 hours or sooner if symptoms worsen.