ICD-10 Code D12.7 – Benign neoplasm of rectosigmoid junction (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D12.7 – Benign neoplasm of rectosigmoid junction
What it is
D12.7 identifies a noncancerous tumor located at the rectosigmoid junction, where the rectum meets the sigmoid colon. Use it when documentation clearly states a benign neoplasm in that specific site.
Clinical signs
Clinical features vary; refer to documentation. These lesions may be found on colonoscopy, imaging, or pathology as a benign mass or polyp at the rectosigmoid junction.
When to use this code
Use D12.7 when the provider documents a benign neoplasm specifically in the rectosigmoid junction, including pathology-confirmed benign tumors. It is also appropriate when the lesion is described as benign and the anatomic site is clearly the rectosigmoid junction. Check documentation if the site is recorded more generally.
Do not use for
Do not use this code for malignant neoplasms, carcinoma in situ, or polyps without documentation of a benign neoplasm. If the lesion is elsewhere in the colon or rectum, select the site-specific code.
Coding tip
Confirm both the benign nature and the exact rectosigmoid location before assigning D12.7.