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v1.0.0
ICD-10 Guide
ICD-10 CodesH16.309

H16.309

Billable

Unspecified interstitial keratitis, unspecified eye

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

Code Description

ICD-10 H16.309 is a billable code used to indicate a diagnosis of unspecified interstitial keratitis, unspecified eye.

Key Diagnostic Point:

Unspecified interstitial keratitis, unspecified eye

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
Unspecified interstitial keratitis can vary in severity and may require careful monitoring and management. Diagnosis may involve a comprehensive eye examination and additional diagnostic tests, which can complicate treatment planning.

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 H16.309 When
  • Ensure accurate documentation of the patient's symptoms, history, and examination findings
  • Use H16
  • 309 when the specific cause of interstitial keratitis is not identified
  • Consider additional codes for associated conditions or complications

Exclusion Criteria

Do NOT use H16.309 When
No specific exclusions found.

Related ICD-10 Codes

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CPT Code

Clinical Scenario

Documentation Requirements

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

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Accurate coding of H16.309 is crucial for appropriate reimbursement and to reflect the complexity of the patient's condition. Misclassification can lead to claim denials or delays in payment.

ICD-9 vs ICD-10

Accurate coding of H16.309 is crucial for appropriate reimbursement and to reflect the complexity of the patient's condition. Misclassification can lead to claim denials or delays in payment.

Reimbursement & Billing Impact

reimbursement and to reflect the complexity of the patient's condition. Misclassification can lead to claim denials or delays in payment.

Resources

Clinical References

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

Coding & Billing References

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

Frequently Asked Questions

What are the common symptoms of interstitial keratitis?

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

How is interstitial keratitis diagnosed?

Diagnosis typically involves a comprehensive eye examination, including visual acuity tests and possibly imaging studies to assess the cornea.

What treatment options are available for interstitial keratitis?

Treatment may include topical corticosteroids, antiviral medications, or other therapies depending on the underlying cause and severity of the condition.