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ICD-10 Guide
ICD-10 CodesH16.32

H16.32

Non-billable

Diffuse interstitial keratitis

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

Code Description

ICD-10 H16.32 is a used to indicate a diagnosis of diffuse interstitial keratitis.

Key Diagnostic Point:

Diffuse interstitial keratitis

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
Diffuse interstitial keratitis can present with variable symptoms and may require multidisciplinary management, including potential referral to specialists for underlying systemic conditions. Diagnosis may involve comprehensive eye examinations and imaging studies, making it moderately complex.

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 H16.32 When
  • Ensure accurate documentation of symptoms, duration, and any associated systemic diseases
  • Use H16
  • 32 specifically for diffuse interstitial keratitis, and consider additional codes for any underlying conditions or complications

Exclusion Criteria

Do NOT use H16.32 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

CPT Code

Clinical Scenario

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 of H16.32 is essential for appropriate reimbursement and to ensure that the patient's medical record reflects the complexity of their condition. Misclassification can lead to claim denials or delays.

ICD-9 vs ICD-10

Accurate coding of H16.32 is essential for appropriate reimbursement and to ensure that the patient's medical record reflects the complexity of their condition. Misclassification can lead to claim denials or delays.

Reimbursement & Billing Impact

reimbursement and to ensure that the patient's medical record reflects the complexity of their condition. Misclassification can lead to claim denials or delays.

Resources

Clinical References

  • •
    American Academy of Ophthalmology - Keratitis
  • •
    National Eye Institute - Interstitial Keratitis
  • •
    Medscape - Diffuse Interstitial Keratitis Overview

Coding & Billing References

  • •
    American Academy of Ophthalmology - Keratitis
  • •
    National Eye Institute - Interstitial Keratitis
  • •
    Medscape - Diffuse Interstitial Keratitis Overview

Frequently Asked Questions

What are the common symptoms of diffuse interstitial keratitis?

Common symptoms include blurred vision, eye pain, redness, and sensitivity to light. Patients may also experience tearing and discharge.

How is diffuse interstitial keratitis diagnosed?

Diagnosis typically involves a comprehensive eye examination, including visual acuity testing, slit-lamp examination, and possibly imaging studies to assess corneal involvement.

What treatments are available for diffuse interstitial keratitis?

Treatment options may include topical corticosteroids, antiviral medications if a viral cause is suspected, and management of any underlying systemic conditions contributing to the keratitis.