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ICD-10 Guide
ICD-10 CodesD09.2

D09.2

Billable

Carcinoma in situ of eye

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 D09.2 is a billable code used to indicate a diagnosis of carcinoma in situ of eye.

Key Diagnostic Point:

Carcinoma in situ of the eye refers to a localized cancerous condition where abnormal cells are present in the epithelial layer of the eye but have not invaded deeper tissues. This condition can occur in various parts of the eye, including the conjunctiva, cornea, and eyelids. The most common type of carcinoma in situ affecting the eye is squamous cell carcinoma, which may arise due to prolonged exposure to ultraviolet light, certain viral infections, or pre-existing lesions. Diagnosis typically involves a thorough examination by an ophthalmologist, including visual acuity tests, slit-lamp examination, and possibly biopsy to confirm the presence of atypical cells. Surveillance protocols for patients diagnosed with carcinoma in situ of the eye often include regular follow-up visits to monitor for any changes in the lesions, as well as potential treatment options such as cryotherapy, topical chemotherapy, or surgical excision. The risk of progression to invasive cancer varies depending on factors such as the type of carcinoma, the location, and the patient's overall health. Early detection and management are crucial to prevent progression and preserve vision.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Variability in documentation practices among providers
  • Need for precise anatomical localization in coding
  • Differentiation from other ocular conditions
  • Potential for misclassification with invasive cancers

Audit Risk Factors

  • Inadequate documentation of the diagnosis
  • Failure to specify the exact location of the carcinoma
  • Lack of follow-up notes indicating surveillance
  • Misinterpretation of pathology reports

Specialty Focus

Medical Specialties

Ophthalmology

Documentation Requirements

Detailed examination notes, pathology reports, and treatment plans must be documented.

Common Clinical Scenarios

Diagnosis of carcinoma in situ during routine eye exams, follow-up after treatment, and management of lesions.

Billing Considerations

Ophthalmologists should ensure clear documentation of the lesion's characteristics and any changes over time.

Oncology

Documentation Requirements

Comprehensive treatment plans, including any systemic therapies or surgical interventions.

Common Clinical Scenarios

Referral for treatment of carcinoma in situ, monitoring for progression to invasive cancer.

Billing Considerations

Oncologists should coordinate with ophthalmologists for accurate staging and treatment documentation.

Coding Guidelines

Inclusion Criteria

Use D09.2 When
  • According to ICD
  • 10 coding guidelines, D09
  • 2 should be used when there is a confirmed diagnosis of carcinoma in situ of the eye, supported by pathology reports
  • It is important to document the specific site of the carcinoma and any relevant treatment history

Exclusion Criteria

Do NOT use D09.2 When
  • Exclusion criteria include any invasive carcinoma or other ocular conditions that do not meet the criteria for carcinoma in situ

Related ICD-10 Codes

Related CPT Codes

67311CPT Code

Excision of eyelid lesion

Clinical Scenario

Used when surgical intervention is required for carcinoma in situ of the eyelid.

Documentation Requirements

Operative notes detailing the excision and pathology results.

Specialty Considerations

Ophthalmologists must document the extent of the lesion and any reconstructive procedures performed.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of data collection and reimbursement processes. D09.2 provides a clear distinction from invasive cancers, which is crucial for treatment planning and epidemiological studies.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of carcinoma in situ, improving the accuracy of data collection and reimbursement processes. D09.2 provides a clear distinction from invasive cancers, which is crucial for treatment planning and epidemiological studies.

Reimbursement & Billing Impact

reimbursement processes. D09.2 provides a clear distinction from invasive cancers, which is crucial for treatment planning and epidemiological studies.

Resources

Clinical References

  • •
    American Academy of Ophthalmology

Coding & Billing References

  • •
    American Academy of Ophthalmology

Frequently Asked Questions

What is the significance of carcinoma in situ of the eye?

Carcinoma in situ of the eye is a pre-invasive condition that, if left untreated, may progress to invasive cancer. Early detection and management are essential to prevent complications and preserve vision.