ICD-10 Code C67.4 – Malignant neoplasm of posterior wall of bladder (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code C67.4 – Malignant neoplasm of posterior wall of bladder
What it is
C67.4 identifies a malignant tumor located in the posterior wall of the bladder. Use this code when documentation specifies that exact bladder site; it is a site-specific bladder cancer code, not a generic bladder malignancy.
Clinical signs
Clinical features vary; refer to documentation. Commonly, bladder cancer is associated with hematuria, irritative urinary symptoms, or findings on cystoscopy or imaging that localize the lesion to the posterior bladder wall.
When to use this code
Use C67.4 when the provider documents primary malignant neoplasm of the posterior bladder wall. It also applies when pathology, operative notes, or imaging clearly identify that site. If the record only says “bladder cancer” without location, check documentation for a more specific code.
Do not use for
Do not use this code for benign bladder tumors, metastatic disease to the bladder, or malignancies documented in another bladder site. If the location is unspecified or conflicting, check documentation before coding.
Coding tip
Code the most specific bladder site documented, and verify whether the lesion is primary or secondary before assigning C67.4.