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v1.0.0
ICD-10 Guide
ICD-10 CodesR85.616

R85.616

Satisfactory anal smear but lacking transformation zone

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/11/2025

Code Description

ICD-10 R85.616 is a billable code used to indicate a diagnosis of satisfactory anal smear but lacking transformation zone.

Key Diagnostic Point:

The ICD-10 code R85.616 refers to a satisfactory anal smear result that does not include a transformation zone. The transformation zone is a critical area in the anal canal where squamous and columnar epithelial cells meet, and its absence in a smear can indicate that the sample may not provide sufficient information for diagnosing potential abnormalities, such as dysplasia or malignancy. This finding is particularly relevant in the context of anal cancer screening, where the presence of abnormal cells in the transformation zone is crucial for risk assessment. A satisfactory smear indicates that the sample was adequate for evaluation, but the lack of the transformation zone necessitates further investigation or repeat testing to ensure comprehensive assessment. Clinicians must consider the patient's risk factors, such as HPV status, history of anal dysplasia, or immunosuppression, when interpreting this result and determining the next steps in management.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Interpretation of smear results can vary based on clinical context.
  • Need for additional testing or follow-up can complicate coding.
  • Documentation must clearly indicate the absence of the transformation zone.
  • Potential overlap with other codes related to abnormal findings.

Audit Risk Factors

  • Inadequate documentation of the smear results.
  • Failure to note the clinical context or follow-up recommendations.
  • Misinterpretation of the absence of the transformation zone.
  • Inconsistent coding practices among different providers.

Specialty Focus

Medical Specialties

Internal Medicine

Documentation Requirements

Documentation should include the reason for the anal smear, results, and any follow-up plans.

Common Clinical Scenarios

Routine screening for anal cancer in high-risk populations, such as HIV-positive patients.

Billing Considerations

Consideration of the patient's overall health and risk factors for anal dysplasia.

Emergency Medicine

Documentation Requirements

Acute care documentation should detail the patient's presenting symptoms and the rationale for the anal smear.

Common Clinical Scenarios

Patients presenting with rectal bleeding or anal pain requiring immediate evaluation.

Billing Considerations

Rapid assessment and documentation are critical in emergency settings.

Coding Guidelines

Inclusion Criteria

Use R85.616 When
  • According to ICD
  • 10 coding guidelines, R85
  • 616 should be used when a satisfactory anal smear is obtained but lacks the transformation zone
  • Coders must ensure that the documentation supports the use of this code and that it is not used inappropriately when other findings are present

Exclusion Criteria

Do NOT use R85.616 When
No specific exclusions found.

Related CPT Codes

88141CPT Code

Cytopathology, anal smear, screening.

Clinical Scenario

Used when performing an anal smear for screening purposes.

Documentation Requirements

Documentation must include the reason for the smear and the results.

Specialty Considerations

Internal medicine and gastroenterology often perform these procedures.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of anal smear results, improving the accuracy of data collection and analysis for screening practices and outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of anal smear results, improving the accuracy of data collection and analysis for screening practices and outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of anal smear results, improving the accuracy of data collection and analysis for screening practices and 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 does a satisfactory anal smear without a transformation zone mean?

It indicates that the sample was adequate for evaluation, but the critical area for assessing potential dysplasia or malignancy was not included, necessitating further investigation.