R85.61
Header — not billableAbnormal cytologic smear of anus
The ICD-10 code for abnormal cytologic smear of anus is R85.61.
R85.61 is a non-billable header code. It groups related conditions but cannot be used on its own for reimbursement — select one of the 9 more specific codes below.
Clinical notes
Excludes1 (not coded here)
An Excludes1 note is a pure exclusion: the excluded condition and this code should never be reported together, because the two conditions cannot occur at the same time (e.g. a congenital form vs. an acquired form of the same disease).
- 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)
Excludes2 (not included here)
An Excludes2 note means the excluded condition is not part of this one, but a patient can have both at the same time — in that case both codes may be reported together.
Documentation support
General coding-documentation guidance — not a substitute for payer-specific requirements or professional coding judgment.
- •This is a non-billable header code. Documentation must support a more specific child code before this diagnosis can be reported on a claim.
- •Confirm the excluded condition(s) listed above are not also present — Excludes1 conditions cannot be coded together with this one.
- •As a general rule, code to the highest level of specificity supported by the documentation in the medical record.
Child codes under R85.61
- R85.610Atypical squamous cells of undetermined significance on cytologic smear of anus (ASC-US)
- R85.611Atypical squamous cells cannot exclude high grade squamous intraepithelial lesion on cytologic smear of anus (ASC-H)
- R85.612Low grade squamous intraepithelial lesion on cytologic smear of anus (LGSIL)
- R85.613High grade squamous intraepithelial lesion on cytologic smear of anus (HGSIL)
- R85.614Cytologic evidence of malignancy on smear of anus
- R85.615Unsatisfactory cytologic smear of anus
- R85.616Satisfactory anal smear but lacking transformation zone
- R85.618Other abnormal cytological findings on specimens from anus
- R85.619Unspecified abnormal cytological findings in specimens from anus
Related codes in this category
- R85.69Abnormal cytological findings in specimens from other digestive organs and abdominal cavity
- R85.61Abnormal cytologic smear of anusnon-billable header