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v1.0.0
ICD-10 Guide
ICD-10 CodesH16.421

H16.421

Billable

Pannus (corneal), right eye

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

Code Description

ICD-10 H16.421 is a billable code used to indicate a diagnosis of pannus (corneal), right eye.

Key Diagnostic Point:

Pannus (corneal), right eye

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity
Pannus in the cornea can vary in severity and may require careful monitoring and management. The clinical complexity can increase if associated with other ocular conditions or if surgical intervention is needed.

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 H16.421 When
  • Ensure accurate documentation of the patient's symptoms, examination findings, and any treatments provided
  • Specify laterality (right eye) and any associated conditions that may affect treatment

Exclusion Criteria

Do NOT use H16.421 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

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

Accurate coding of H16.421 is crucial for appropriate reimbursement and to reflect the severity of the patient's condition. Misclassification can lead to denials or delays in payment.

ICD-9 vs ICD-10

Accurate coding of H16.421 is crucial for appropriate reimbursement and to reflect the severity of the patient's condition. Misclassification can lead to denials or delays in payment.

Reimbursement & Billing Impact

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

Resources

Clinical References

  • •
    American Academy of Ophthalmology - Pannus
  • •
    National Eye Institute - Corneal Disorders

Coding & Billing References

  • •
    American Academy of Ophthalmology - Pannus
  • •
    National Eye Institute - Corneal Disorders

Frequently Asked Questions

What is pannus in the cornea?

Pannus refers to a growth of vascular tissue over the cornea, often associated with chronic inflammation or irritation. It can affect vision if it covers the central cornea.

How is pannus treated?

Treatment options may include topical medications, surgical intervention, or laser therapy, depending on the severity and underlying cause of the pannus.