0NH00NZInsertion of Neurostimulator Generator into Skull, Open Approach

0NH00NZ is the ICD-10-PCS code for a insertion procedure on the skull using an open approach with neurostimulator generator. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

In plain terms, this corresponds to cranial implantation or replacement of neurostimulator pulse generator, the ICD-9-CM procedure title it maps to (01.20).

With a different device, use 0NH003Z (infusion device), 0NH004Z (internal fixation device), 0NH005Z (external fixation device) and 0NH00MZ (bone growth stimulator).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator), DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator) and DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures” and “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”.

It has been valid since ICD-10-PCS took effect on October 1, 2015.