Drug induced retention of urine

This code signifies the inability to voluntarily empty the bladder, or incomplete bladder emptying, directly caused by the administration of a medication. This condition results in the accumulation of urine within the bladder due to the drug's effect on bladder function or urethral sphincter control.

Assign this code when documentation clearly links a patient's urinary retention to a specific drug. This is often seen with anticholinergic medications, opioids, or certain antihistamines. Supporting documentation should include a physician's diagnosis of drug-induced urinary retention and identification of the causative agent.

• Always code the adverse effect of the drug first, followed by the code for the drug itself (T36-T50 with a 5th or 6th character indicating adverse effect).
• Ensure the documentation explicitly states "drug-induced" or similar phrasing; do not assume drug causation if not specified.
• Differentiate from other causes of urinary retention (e.g., prostatic hypertrophy, neurological conditions) which would require different codes.