Calculus in bladder

This code represents the presence of a stone or calculus within the urinary bladder. These calculi are typically formed from mineral deposits and can vary in size and composition, potentially causing symptoms such as dysuria, hematuria, or urinary obstruction.

Use this code when documentation specifies the presence of a calculus located within the bladder. This diagnosis is often supported by imaging studies such as ultrasound, CT scan, or X-ray, and may be confirmed during cystoscopy.

• Differentiate from calculi in other parts of the urinary tract; this code is specific to the bladder.
• Do not use for staghorn calculus, which is specifically excluded and coded elsewhere (N20.0).
• Code any associated symptoms, such as hematuria (R31.0) or urinary obstruction (N13.8), as secondary diagnoses.