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ICD-10 Guide
DiagnosesAnterior Uveitis

Anterior Uveitis

ICD-10 Coding for Anterior Uveitis(H20.01-, H20.1-, H20.03-)

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

Diagnosis Overview

What is Anterior Uveitis?
Essential facts and insights about Anterior Uveitis

Key Clinical Considerations:

  • Presence of eye pain, redness, photophobia, and blurred vision.
  • Increased intraocular pressure may be noted.
  • Slit-lamp examination revealing anterior chamber inflammation, such as cells and flare.
  • Presence of keratic precipitates on the corneal endothelium.
  • Severity can be classified as mild, moderate, or severe based on the degree of inflammation and visual acuity.

Clinical Information

Clinical Criteria & Documentation Requirements

  • Complete patient history including onset, duration, and severity of symptoms.
  • Specific terminology such as 'anterior uveitis' or 'iritis' must be documented.
  • Examples include noting the presence of cells in the anterior chamber or specific visual acuity measurements.
  • Documentation must support medical necessity for diagnostic tests and treatments.
  • Quality measures may include documentation of follow-up visits and treatment responses.

Coding Guidelines

Usage Guidelines & Examples

  • Use H20.01 for unilateral acute anterior uveitis and H20.1 for chronic cases.
  • Do not use these codes for posterior uveitis or other unrelated eye conditions.
  • H20.02 and H20.03 are related codes for bilateral cases; ensure correct usage based on laterality.
  • Common errors include misclassifying the type of uveitis or failing to document laterality.
  • In complex cases, consider additional codes for associated conditions like glaucoma.

Code Exclusions

Important Exclusions

  • Excludes posterior uveitis (H30) and non-inflammatory conditions.
  • Alternative codes for excluded conditions include H10 for conjunctivitis.
  • Conditions are excluded due to differing pathophysiology and treatment approaches.
  • Common mistakes include coding anterior uveitis when posterior uveitis is present.
  • Related but distinct conditions include scleritis and episcleritis.

Related ICD-10 Codes

Primary Codes
H20.01
Unilateral acute anterior uveitis
H20.1
Chronic anterior uveitis
Ancillary Codes
B00.51
Differential Codes
H20.1-
H20.01-
H20.04-

Related CPT Codes

CPT codes will be available in a future update.

Specialty Focus

Primary Specialty

Ophthalmology

Specialty Applications

  • Applies to patients with inflammatory eye diseases.
  • Common in adults aged 20-50, but can occur in any age group.
  • Clinical settings include outpatient ophthalmology clinics and emergency departments.
  • Specialty-specific applications in ophthalmology and rheumatology.
  • Used in treatment contexts involving corticosteroids or immunosuppressive 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 anterior uveitis based on clinical findings of eye pain and redness.'

Template 2

Template: 'Clinical presentation consistent with anterior uveitis including photophobia and blurred vision.'

Template 3

Template: 'Diagnostic criteria met as evidenced by slit-lamp examination showing cells in the anterior chamber.'

Template 4

Template: 'Treatment plan initiated for anterior uveitis with corticosteroids and follow-up scheduled.'

Template 5

Template: 'Follow-up care for anterior uveitis including monitoring of intraocular pressure and visual acuity.'

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 patient symptoms, examination findings, and treatment plans.

How does this differ from similar diagnoses?

Anterior uveitis is characterized by inflammation of the anterior chamber, unlike posterior uveitis.

What are common billing considerations?

Ensure documentation supports the diagnosis and reflects medical necessity for treatments.

What procedures are typically associated?

CPT codes for procedures may include 92002 for eye examination and 92014 for follow-up.

Are there any quality reporting implications?

Quality measures may include tracking visual acuity and treatment outcomes.