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v1.0.0
ICD-10 Guide
ICD-10 CodesH16.321

H16.321

Billable

Diffuse interstitial keratitis, right eye

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/06/2025

Code Description

ICD-10 H16.321 is a billable code used to indicate a diagnosis of diffuse interstitial keratitis, right eye.

Key Diagnostic Point:

Diffuse interstitial keratitis, right eye

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
Diffuse interstitial keratitis can vary in severity, requiring careful assessment and management. It may involve systemic conditions, necessitating a multidisciplinary approach.

Specialty Focus

Medical Specialties

Ophthalmology

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Optometry

Documentation Requirements

Standard ICD-10-CM documentation requirements apply

Common Clinical Scenarios

Various clinical presentations within this specialty area

Billing Considerations

Follow specialty-specific billing guidelines

Coding Guidelines

Inclusion Criteria

Use H16.321 When
  • Ensure accurate documentation of the diagnosis, including the laterality (right eye)
  • Use additional codes for any underlying systemic conditions or complications as necessary

Exclusion Criteria

Do NOT use H16.321 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

CPT Code

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Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

CPT Code

Clinical Scenario

Documentation Requirements

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Accurate coding impacts patient care by ensuring appropriate treatment plans are followed. It also affects reimbursement rates and compliance with insurance requirements.

ICD-9 vs ICD-10

Accurate coding impacts patient care by ensuring appropriate treatment plans are followed. It also affects reimbursement rates and compliance with insurance requirements.

Reimbursement & Billing Impact

reimbursement rates and compliance with insurance requirements.

Resources

Clinical References

  • •
    American Academy of Ophthalmology - Keratitis Overview
  • •
    National Eye Institute - Corneal Diseases
  • •
    MedlinePlus - Eye Disorders

Coding & Billing References

  • •
    American Academy of Ophthalmology - Keratitis Overview
  • •
    National Eye Institute - Corneal Diseases
  • •
    MedlinePlus - Eye Disorders

Frequently Asked Questions

What are the common symptoms of diffuse interstitial keratitis?

Common symptoms include blurred vision, eye pain, redness, and sensitivity to light.

How is diffuse interstitial keratitis treated?

Treatment may include corticosteroids, antiviral medications, and in some cases, surgical intervention depending on the severity.

Is diffuse interstitial keratitis contagious?

No, diffuse interstitial keratitis is not contagious; it is often associated with underlying systemic conditions.