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ICD-10 Guide
DiagnosesAllergic Conjunctivitis Bilateral

Allergic Conjunctivitis Bilateral

ICD-10 Coding for Allergic Conjunctivitis Bilateral(H10.13, H10.413)

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

Diagnosis Overview

What is Allergic Conjunctivitis Bilateral?
Essential facts and insights about Allergic Conjunctivitis Bilateral

Key Clinical Considerations:

  • Bilateral conjunctival hyperemia and edema
  • Itching, burning, or watery discharge from both eyes
  • Presence of allergic shiners or conjunctival papillae on examination
  • Negative results for infectious causes (e.g., conjunctivitis caused by bacteria or viruses)
  • Severity may be assessed based on symptom duration and impact on daily activities

Clinical Information

Clinical Criteria & Documentation Requirements

  • Document the patient's symptoms, duration, and any triggers identified
  • Use specific terminology such as 'bilateral conjunctivitis' and 'allergic etiology'
  • Examples include: 'Patient presents with bilateral conjunctival redness and itching consistent with allergic conjunctivitis'
  • Document medical necessity for allergy testing if performed
  • Include quality measures such as symptom severity and response to treatment

Coding Guidelines

Usage Guidelines & Examples

  • Use H10.13 for bilateral allergic conjunctivitis when symptoms are present in both eyes
  • Do NOT use this code for unilateral allergic conjunctivitis or other types of conjunctivitis
  • Compare with H10.12 (unilateral allergic conjunctivitis) and H10.41x (other allergic conjunctivitis)
  • Common errors include misclassifying allergic conjunctivitis as infectious conjunctivitis
  • In complex cases, ensure to document all symptoms and any co-existing conditions

Code Exclusions

Important Exclusions

  • Exclude codes for infectious conjunctivitis (e.g., H10.0x) and other non-allergic causes
  • Alternative codes for excluded conditions include H10.12 for unilateral cases
  • Conditions are excluded due to differing etiologies and treatment approaches
  • Common mistakes include coding allergic conjunctivitis when the cause is infectious
  • Related but distinct conditions include vernal keratoconjunctivitis and giant papillary conjunctivitis

Related ICD-10 Codes

Primary Codes
H10.13
Bilateral allergic conjunctivitis
H10.413
Other allergic conjunctivitis, bilateral
Ancillary Codes
H11.433
L29.8
Differential Codes
H10.413
H10.13

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Ophthalmology

Specialty Applications

  • Applies to patients with a history of allergies or atopic conditions
  • Common in all age groups, particularly in children and young adults
  • Clinical settings include outpatient ophthalmology clinics and allergy specialty practices
  • Specialty-specific applications in ophthalmology and allergy/immunology
  • Used in treatment contexts involving antihistamines or topical corticosteroids

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 bilateral allergic conjunctivitis based on clinical findings of redness and itching.'

Template 2

Template: 'Clinical presentation consistent with allergic conjunctivitis including bilateral conjunctival edema and discharge.'

Template 3

Template: 'Diagnostic criteria for allergic conjunctivitis met as evidenced by bilateral conjunctival hyperemia.'

Template 4

Template: 'Treatment plan initiated for allergic conjunctivitis with topical antihistamines and patient education.'

Template 5

Template: 'Follow-up care for allergic conjunctivitis including monitoring of symptom resolution and potential allergen exposure.'

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?

Document symptoms, duration, and any identified allergens.

How does this differ from similar diagnoses?

Allergic conjunctivitis is characterized by an allergic response, unlike infectious types.

What are common billing considerations?

Ensure medical necessity is documented, especially for allergy testing.

What procedures are typically associated?

CPT codes for allergy testing and topical treatments may be relevant.

Are there any quality reporting implications?

Quality measures may include symptom assessment and treatment efficacy.