ICD-10 Code C67.7 – Malignant neoplasm of urachus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C67.7 – Malignant neoplasm of urachus
What it is
C67.7 identifies a malignant tumor arising from the urachus, a fetal remnant between the bladder and umbilicus. Use it when documentation specifies a cancer of the urachal remnant or urachal origin.
Clinical signs
Clinical features vary; refer to documentation. Urachal malignancies are often noted with hematuria, suprapubic mass, abdominal pain, or umbilical discharge, but you should code only what is documented.
When to use this code
Use C67.7 when the provider documents primary malignant neoplasm of the urachus, urachal carcinoma, or a malignant lesion clearly arising from the urachal remnant. It may also be supported by pathology, operative, or imaging reports identifying urachal origin. If the record only says bladder cancer without urachal involvement, check documentation.
Do not use for
Do not use this code for benign urachal lesions, urachal cysts, or nonspecific bladder tumors. If the site is uncertain or documentation conflicts, check documentation before assigning C67.7.
Coding tip
Look for the exact phrase “urachal” in the diagnosis or pathology report before coding C67.7.