2007 ICD-9-CM Procedure 87.01 Pneumoencephalogram Radiographic visualization of the cerebral ventricles by injection of air or other gas. 87.01 is a specific code that can be used to specify a procedure 87.01 contains 2 index entries View the full Volume 3 87.* hierarchy Index entries containing 87.01: Encephalography (cisternal puncture) (fractional) (lumbar) (pneumoencephalogram) 87.01 Pneumoencephalogram 87.01