Unsatisfactory cytologic smear of anus

This code indicates that a cytology specimen collected from the anus was deemed inadequate for interpretation by the pathologist. This typically means there were insufficient cells, poor cellular preservation, or obscuring factors (e.g., blood, inflammation) preventing a definitive diagnostic assessment. It signifies a technical issue with the specimen rather than a specific pathological finding.

Assign this code when pathology reports explicitly state an anal cytologic smear is "unsatisfactory," "inadequate," or "nondiagnostic" due to technical limitations. This often necessitates a repeat procedure to obtain a viable specimen for evaluation. Documentation should clearly indicate the reason for the unsatisfactory result.

• Do not use this code if the smear was satisfactory but negative for intraepithelial lesion or malignancy (NILM); use Z12.89 for screening.
• This code is for the result of the smear, not the procedure itself.
• Consider sequencing this code as a secondary diagnosis if the patient presented for a specific screening or diagnostic workup that led to the unsatisfactory result.