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ICD-10 Guide
ICD-10 CodesD09.22

D09.22

Billable

Carcinoma in situ of left eye

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

Code Description

ICD-10 D09.22 is a billable code used to indicate a diagnosis of carcinoma in situ of left eye.

Key Diagnostic Point:

Carcinoma in situ (CIS) of the left eye refers to a localized form of cancer where abnormal cells are present but have not invaded surrounding tissues. This condition is often detected during routine eye examinations or imaging studies. The left eye may exhibit changes in the conjunctiva, cornea, or other ocular structures, which can be identified through various diagnostic methods, including biopsy and histopathological examination. CIS is considered a precursor to invasive cancer, and while it is not life-threatening in its current state, it requires careful monitoring and management to prevent progression to invasive carcinoma. Surveillance protocols typically involve regular ophthalmologic evaluations, imaging studies, and possibly topical treatments or surgical interventions, depending on the severity and characteristics of the lesions. The risk of progression to invasive cancer varies based on factors such as the type of carcinoma, patient demographics, and underlying health conditions. Early detection and intervention are crucial in managing this condition effectively.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between various types of ocular carcinomas
  • Understanding the nuances of carcinoma in situ versus invasive carcinoma
  • Need for precise documentation of ocular findings
  • Potential for co-existing ocular conditions that may complicate coding

Audit Risk Factors

  • Inadequate documentation of the diagnosis
  • Failure to specify the exact location of the carcinoma
  • Lack of follow-up documentation for surveillance protocols
  • Misclassification of carcinoma in situ as invasive carcinoma

Specialty Focus

Medical Specialties

Ophthalmology

Documentation Requirements

Detailed ocular examination findings, biopsy results, and treatment plans.

Common Clinical Scenarios

Routine screenings, management of ocular lesions, and follow-up for carcinoma in situ.

Billing Considerations

Ensure clear documentation of the type and location of carcinoma, as well as any treatment provided.

Oncology

Documentation Requirements

Comprehensive cancer staging, treatment history, and follow-up care plans.

Common Clinical Scenarios

Management of patients with a history of ocular carcinoma and coordination of care with ophthalmologists.

Billing Considerations

Documentation should reflect the multidisciplinary approach to treatment and surveillance.

Coding Guidelines

Inclusion Criteria

Use D09.22 When
  • According to the ICD
  • CM coding guidelines, D09
  • 22 should be used when carcinoma in situ is confirmed through biopsy or other diagnostic methods
  • It is essential to document the specific site and any associated conditions

Exclusion Criteria

Do NOT use D09.22 When
  • Exclusion criteria include cases where the carcinoma has progressed to invasive cancer

Related ICD-10 Codes

Related CPT Codes

68320CPT Code

Excision of lesion of eyelid

Clinical Scenario

Used when excising a carcinoma in situ of the left eye.

Documentation Requirements

Document the size and location of the lesion, as well as the pathology results.

Specialty Considerations

Ophthalmologists should ensure that the excision is documented as related to the carcinoma in situ.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of conditions like carcinoma in situ, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of conditions like carcinoma in situ, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of conditions like carcinoma in situ, improving the accuracy of patient records and facilitating better tracking of treatment outcomes.

Resources

Clinical References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Coding & Billing References

  • •
    ICD-10-CM Official Guidelines for Coding and Reporting

Frequently Asked Questions

What is the difference between carcinoma in situ and invasive carcinoma?

Carcinoma in situ refers to cancer cells that have not invaded surrounding tissues, while invasive carcinoma has spread beyond the original site into adjacent tissues.