Leakage of ventricular intracranial shunt, init

This code signifies the initial presentation of cerebrospinal fluid (CSF) leakage from a ventricular shunt system, which is used to drain excess CSF from the brain. This leakage can occur at various points along the shunt pathway, including the catheter, reservoir, or tubing, and may manifest as fluid accumulation under the skin or drainage from an incision site.

Apply this code when a patient presents for the first time with signs and symptoms directly attributable to CSF leakage from a previously implanted ventricular shunt. This includes situations where the leakage is confirmed through imaging, physical examination, or laboratory analysis of the fluid. It is appropriate for the initial diagnostic workup and management of the leakage.

• Ensure documentation clearly specifies "leakage" and not just a "malfunction" if leakage is the primary issue.
• Confirm this is the initial encounter for this specific leakage event; subsequent encounters for the same leakage would use a different seventh character.
• Look for documentation of CSF presence outside the shunt system, such as a pseudomeningocele or external drainage.