Leakage of nervous sys device, implant or graft, sequela

This code signifies a long-term or late-occurring complication involving the leakage of a nervous system device, implant, or graft, such as a cerebrospinal fluid shunt, neurostimulator, or nerve graft. The leakage can lead to various neurological symptoms or device malfunction. This code is used when the initial leakage event has resolved, but its lasting effects or consequences are still being managed.

Use this code when documenting the sequela of a previously resolved leakage from a nervous system device, implant, or graft. This applies to situations where the patient is experiencing ongoing issues directly attributable to the past leakage, even if the leakage itself is no longer active. Examples include chronic pain, neurological deficits, or persistent CSF collections resulting from a prior shunt leak.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela or current condition being treated.
• Ensure documentation clearly links the current condition to a past leakage event of a nervous system device, implant, or graft.
• Do not use this code for active or acute leakage; instead, use the appropriate acute leakage code from the T85.63- subcategory.