D01.3 vs R85.61
D01.3 (Carcinoma in situ of anus and anal canal) compared with R85.61 (Abnormal cytologic smear of anus), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. R85.61 carries an Excludes1 note covering D01.3: “carcinoma in situ of anus (histologically confirmed) (D01.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. R85.61 carries an Excludes1 note covering D01.3: “anal intraepithelial neoplasia III [AIN III] (D01.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
No — do not report together. R85.61 carries an Excludes1 note covering D01.3: “severe dysplasia of anus (histologically confirmed) (D01.3)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| D01.3Carcinoma in situ of anus and anal canal | R85.61Abnormal cytologic smear of anus | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | C00-D49 — Neoplasms (C00-D49) | R00-R99 — Symptoms, Signs and Abnormal Clinical and Laboratory Findings, Not Elsewhere Classified (R00-R99) |
| Definition | Carcinoma in situ of anus and anal canal is a billable ICD-10-CM diagnosis code (D01.3). | Abnormal cytologic smear of anus is a non-billable ICD-10-CM category code (R85.61). |
| Includes | Bowen's disease erythroplasia grade III intraepithelial neoplasia Queyrat's erythroplasia | abnormal findings in peritoneal fluid abnormal findings in saliva |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources