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ICD-10 Guide
ICD-10 CodesH16.3

H16.3

Non-billable

Interstitial and deep keratitis

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

Code Description

ICD-10 H16.3 is a used to indicate a diagnosis of interstitial and deep keratitis.

Key Diagnostic Point:

Interstitial and deep keratitis

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
Interstitial and deep keratitis can present with varying degrees of severity, requiring careful assessment and management. Patients may experience significant discomfort, vision changes, and potential complications, necessitating a thorough clinical evaluation and tailored treatment plan.

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 H16.3 When
  • When coding for interstitial and deep keratitis (H16
  • 3), ensure accurate documentation of the patient's symptoms, duration, and any underlying conditions
  • Include any relevant diagnostic tests performed and treatments administered to support the medical necessity of the visit

Exclusion Criteria

Do NOT use H16.3 When
No specific exclusions found.

Related ICD-10 Codes

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CPT Code

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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 H16.3 is crucial for proper reimbursement and tracking of keratitis cases. Misclassification can lead to claim denials or delays in payment. Additionally, it helps in understanding the prevalence and management of corneal diseases.

ICD-9 vs ICD-10

Accurate coding of H16.3 is crucial for proper reimbursement and tracking of keratitis cases. Misclassification can lead to claim denials or delays in payment. Additionally, it helps in understanding the prevalence and management of corneal diseases.

Reimbursement & Billing Impact

reimbursement and tracking of keratitis cases. Misclassification can lead to claim denials or delays in payment. Additionally, it helps in understanding the prevalence and management of corneal diseases.

Resources

Clinical References

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

Coding & Billing References

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

Frequently Asked Questions

What are the common symptoms of interstitial and deep keratitis?

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

How is interstitial and deep keratitis treated?

Treatment may include topical antibiotics, corticosteroids, and in some cases, surgical intervention such as corneal transplantation, depending on the severity and underlying cause.

Is interstitial keratitis contagious?

Interstitial keratitis itself is not contagious, but the underlying infections that may cause it can be, such as viral infections.