The following new codes have been created to describe cranial and spinal cerebrospinal fluid leaks:
- G96.00 Cerebrospinal fluid leak, unspecified
- G96.01 Cranial cerebrospinal fluid leak, spontaneous
- G96.02 Spinal cerebrospinal fluid leak, spontaneous
- G96.08 Other cranial cerebrospinal fluid leak
- G96.09 Other spinal cerebrospinal fluid leak
Loss of cerebrospinal fluid may result in intracranial hypotension. Intracranial hypotension is most often associated with a CSF leak at the level of the spine and is not causally associated with a CSF leak arising from the skull base.
CSF leaks may occur spontaneously and the cause is unknown. Other CSF leaks are the result of trauma such as head injury, brain or spinal surgery, an epidural, a lumbar puncture (spinal tap) or a skull base tumor.
It is clinically important to differentiate between spontaneous CSF leaks and other CSF leaks, and between cranial CSF leaks and spinal CSF leaks.
New codes were created to enable better differentiation of cranial and spinal cerebrospinal fluid leaks, which have different underlying causes, symptoms, complications, diagnostic testing and treatments.