R85.61 is a non-billable/non-specific diagnosis code from the 2025 ICD-10-CM used to classify the following condition: Abnormal cytologic smear of anus.
Type 1 excludes
Abnormal cytological findings in specimens from other digestive organs and abdominal cavity (R85.69)
Carcinoma in situ of anus (histologically confirmed) (D01.3)
Anal intraepithelial neoplasia I [AIN I] (K62.82)
Anal intraepithelial neoplasia II [AIN II] (K62.82)
Anal intraepithelial neoplasia III [AIN III] (D01.3)
Dysplasia (mild) (moderate) of anus (histologically confirmed) (K62.82)
Severe dysplasia of anus (histologically confirmed) (D01.3)
Type 2 excludes
Codes
R85.610
Atypical squamous cells of undetermined significance on cytologic smear of anus (ASC-US)
R85.611
Atypical squamous cells cannot exclude high grade squamous intraepithelial lesion on cytologic smear of anus (ASC-H)
R85.612
Low grade squamous intraepithelial lesion on cytologic smear of anus (LGSIL)
R85.613
High grade squamous intraepithelial lesion on cytologic smear of anus (HGSIL)
R85.614
Cytologic evidence of malignancy on smear of anus
R85.615
Unsatisfactory cytologic smear of anus
R85.616
Satisfactory anal smear but lacking transformation zone
R85.618
Other abnormal cytological findings on specimens from anus
R85.619
Unspecified abnormal cytological findings in specimens from anus
Versions
2025
No changes
2024
No changes
2023
No changes
2022
No changes
2021
No changes
2020
No changes
2019
No changes
2018
No changes
2017
No changes
2016
New code