ICD-10 Logo
ICDxICD-10 Medical Coding
ICD-10 Logo
ICDxICD-10 Medical Coding
ICD 10 CodesDiagnoses
ICD 10 CodesDiagnoses
ICD-10 Logo
ICDxICD-10 Medical Coding

Comprehensive ICD-10-CM code reference with AI-powered search capabilities.

© 2025 ICD Code Compass. All rights reserved.

Browse

  • All Chapters
  • All Categories
  • Diagnoses

Tools

  • AI Code Search
ICD-10-CM codes are maintained by the CDC and CMS. This tool is for reference purposes only.
v1.0.0
ICD-10 Guide
DiagnosesAtopic Eczema

Atopic Eczema

ICD-10 Coding for Atopic Eczema(L20.8, L20.9)

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

Diagnosis Overview

What is Atopic Eczema?
Essential facts and insights about Atopic Eczema

Key Clinical Considerations:

  • Presence of pruritic (itchy) skin lesions, often with a chronic relapsing course.
  • Laboratory findings may include elevated serum IgE levels and eosinophilia.
  • Physical examination findings typically include dry, scaly skin, erythema, and lichenification.
  • Imaging or procedural findings are generally not applicable for atopic eczema.
  • Severity criteria include mild, moderate, and severe classifications based on the extent of skin involvement and impact on quality of life.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Medical records must document the patient's history of atopic dermatitis, including onset and duration.
  • Specific terminology such as 'atopic dermatitis' or 'atopic eczema' must be used consistently.
  • Documentation examples include detailed descriptions of the lesions, their location, and associated symptoms.
  • Medical necessity must be established through documentation of the impact on daily living and treatment response.
  • Quality measures may require documentation of patient-reported outcomes and treatment effectiveness.

Coding Guidelines

Usage Guidelines & Examples

  • Use L20.8 for other specified atopic dermatitis when the condition does not fit into more specific categories.
  • Do not use L20.9 when a more specific diagnosis is available, as this may lead to claim denials.
  • L20.0 (Atopic dermatitis, infantile) and L20.1 (Atopic dermatitis, childhood) are related codes for specific age groups.
  • Common coding errors include using L20.9 when the condition is well-defined; ensure specificity.
  • In complex cases, consider the patient's age, duration of symptoms, and treatment history for accurate code selection.

Code Exclusions

Important Exclusions

  • Excludes conditions such as seborrheic dermatitis and contact dermatitis.
  • Alternative codes for excluded conditions include L21 for seborrheic dermatitis.
  • Conditions are excluded due to differing etiologies and treatment approaches.
  • Common exclusion mistakes include misclassifying contact dermatitis as atopic eczema.
  • Related but distinct conditions include nummular eczema and dyshidrotic eczema.

Related ICD-10 Codes

Primary Codes
L20.8
Other specified atopic dermatitis
L20.9
Atopic dermatitis, unspecified
Ancillary Codes
L29.9
Differential Codes
L23.9
L30.9

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Dermatology

Specialty Applications

  • Applies to patients with a history of atopic dermatitis or eczema.
  • Patient populations include children and adults, with a higher prevalence in those with a family history of atopy.
  • Clinical settings include outpatient dermatology clinics and primary care offices.
  • Specialty-specific applications are relevant in dermatology and allergy/immunology.
  • Treatment contexts include management of flare-ups and long-term maintenance therapy.

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: 'Patient diagnosed with atopic eczema based on clinical findings of pruritic lesions.'

Template 2

Template: 'Clinical presentation consistent with atopic dermatitis including dry, scaly skin.'

Template 3

Template: 'Diagnostic criteria for atopic eczema met as evidenced by elevated IgE levels.'

Template 4

Template: 'Treatment plan initiated for atopic eczema with topical corticosteroids and emollients.'

Template 5

Template: 'Follow-up care for atopic eczema including monitoring of flare-ups and treatment efficacy.'

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 diagnosis?

Documentation should include patient history, clinical findings, and treatment response.

How does this differ from similar diagnoses?

Atopic eczema is characterized by its chronic nature and association with other atopic conditions.

What are common billing considerations?

Ensure that the diagnosis aligns with the services provided to optimize reimbursement.

What procedures are typically associated?

Common CPT codes include 99213 for office visits and 17000 for cryotherapy of lesions.

Are there any quality reporting implications?

Quality measures may include tracking treatment outcomes and patient satisfaction scores.