ICD-10 Code D12.9 – Benign neoplasm of anus and anal canal (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D12.9 – Benign neoplasm of anus and anal canal
What it is
D12.9 identifies a noncancerous tumor in the anus or anal canal. Use it when documentation states a benign neoplasm and does not provide a more specific site.
Clinical signs
Clinical features vary; refer to documentation. Benign anorectal lesions may be found on exam, anoscopy, or pathology, and can present with bleeding, discomfort, or a mass.
When to use this code
Use D12.9 when the provider documents a benign neoplasm involving the anus or anal canal and no more specific code is available. It also fits pathology-confirmed benign lesions recorded at this site. If the note only says “lesion” or “polyp,” check documentation before coding.
Do not use for
Do not use this code for malignant neoplasms, dysplasia, or inflammatory anorectal disease. If the record identifies a different exact site or a non-neoplastic condition, choose the more specific code.
Coding tip
Code from the provider’s final diagnosis, and query if the pathology or location is unclear.