ICD-10-CM Book 2025 Edition
Chapters ICD-10-CM Book Table of Content /
chapter 18 R00-R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified /
R83-R89 Abnormal findings on examination of other body fluids, substances and tissues, without diagnosis /
R85 Abnormal findings in specimens from digestive organs and abdominal cavity
Billable ICD-10-CM Code R85.613
R85.613
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High grade squamous intraepithelial lesion on cytologic smear of anus (HGSIL) 
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