In this procedure, the provider inserts a needle at the craniocervical junction to access cerebrospinal fluid, or CSF, in a procedure known as a cisternal puncture. Or the provider performs the same in a high cervical approach in a procedure known as a lateral cervical puncture. The provider does not inject a diagnostic or therapeutic agent. This service is done to measure pressure, remove excess CSF fluid, and or collect fluid samples to analyze the CSF for neurological conditions.
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