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Inpatient Procedure Code

0NP04MZ

Removal of Bone Growth Stimulator from Skull, Percutaneous Endoscopic Approach

Removal of Bone Stim from Skull, Perc Endo Approach

Axis Breakdown

Every ICD-10-PCS code is exactly seven characters, one per axis. Each character's meaning is defined by its position in the code.

PositionValueMeaning
1
Section0

Medical and Surgical

2
Body SystemN

Head and Facial Bones

3
Root OperationP

Removal

Taking out or off a device from a body part

4
Body Part0

Skull

5
Approach4

Percutaneous Endoscopic

6
DeviceM

Bone Growth Stimulator

7
QualifierZ

No Qualifier

Potential MS-DRG Relationships (FY2026)

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 11 MS-DRGs:

  • MDC 01 — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis: DRG 023, DRG 024
  • MDC 01 — Craniotomy and endovascular intracranial procedures: DRG 025, DRG 026, DRG 027
  • MDC 17 — Lymphoma and Leukemia with Major O.R. Procedures: DRG 820, DRG 821, DRG 822
  • MDC 17 — Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures: DRG 826, DRG 827, DRG 828

From the CMS MS-DRG Definitions Manual, Appendix E. Actual DRG assignment depends on the complete claim.

Related Codes

Same operation — other Body Part

Same table and root operation, differing only in the body part character.

0NPB4MZ — Removal of Bone Growth Stimulator from Nasal Bone, Percutaneous Endoscopic Approach, 0NPW4MZ — Removal of Bone Growth Stimulator from Facial Bone, Percutaneous Endoscopic Approach

Same operation — other Approach

Same table and root operation, differing only in the approach character.

0NP00MZ — Removal of Bone Growth Stimulator from Skull, Open Approach, 0NP03MZ — Removal of Bone Growth Stimulator from Skull, Percutaneous Approach, 0NP0XMZ — Removal of Bone Growth Stimulator from Skull, External Approach

Same operation — other Device

Same table and root operation, differing only in the device character.

0NP040Z — Removal of Drainage Device from Skull, Percutaneous Endoscopic Approach, 0NP043Z — Removal of Infusion Device from Skull, Percutaneous Endoscopic Approach, 0NP044Z — Removal of Internal Fixation Device from Skull, Percutaneous Endoscopic Approach, 0NP045Z — Removal of External Fixation Device from Skull, Percutaneous Endoscopic Approach, 0NP047Z — Removal of Autologous Tissue Substitute from Skull, Percutaneous Endoscopic Approach, 0NP04JZ — Removal of Synthetic Substitute from Skull, Percutaneous Endoscopic Approach, 0NP04KZ — Removal of Nonautologous Tissue Substitute from Skull, Percutaneous Endoscopic Approach, 0NP04SZ — Removal of Hearing Device from Skull, Percutaneous Endoscopic Approach

Contextual Map

Every relationship of 0NP04MZ in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

PCS table

  • 0NP[PCS table]
  • [object Object] — Section: [object Object] [Section]: “[object Object]”
  • [object Object] — Body System: [object Object] [Body System]: “[object Object]”
  • [object Object] — Operation: [object Object] [Operation]: “[object Object]”

MS-DRG participation (11)

  • DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR [MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”
  • DRG 024 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC [MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”
  • DRG 025 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC [MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”
  • DRG 026 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC [MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC — Craniotomy and endovascular intracranial procedures (MDC 01)”
  • DRG 027 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC [MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”
  • DRG 820 — LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH MCC [MS-DRG]: “LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH MCC — Lymphoma and Leukemia with Major O.R. Procedures (MDC 17)”
  • DRG 821 — LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH CC [MS-DRG]: “LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITH CC — Lymphoma and Leukemia with Major O.R. Procedures (MDC 17)”
  • DRG 822 — LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITHOUT CC/MCC [MS-DRG]: “LYMPHOMA AND LEUKEMIA WITH MAJOR O.R. PROCEDURES WITHOUT CC/MCC — Lymphoma and Leukemia with Major O.R. Procedures (MDC 17)”
  • and 3 more

MDC crossing · diagnoses (3301)

  • MDC 01 — Diseases and Disorders of the Nervous System [MDC crossing]: “Diseases and Disorders of the Nervous System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • MDC 17 — Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms [MDC crossing]: “Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
  • A02.21 — Salmonella meningitis [Same-MDC diagnosis]: “Salmonella meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
  • A06.6 — Amebic brain abscess [Same-MDC diagnosis]: “Amebic brain abscess — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
  • A17.0 — Tuberculous meningitis [Same-MDC diagnosis]: “Tuberculous meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
  • A17.1 — Meningeal tuberculoma [Same-MDC diagnosis]: “Meningeal tuberculoma — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
  • A17.81 — Tuberculoma of brain and spinal cord [Same-MDC diagnosis]: “Tuberculoma of brain and spinal cord — grouped in MDC 01, the diagnosis side of this code's crossing.” · check together
  • and 3296 more

Nearest codes

  • 0NP00MZ — Removal of Bone Growth Stimulator from Skull, Open Approach [One axis away]
  • 0NP03MZ — Removal of Bone Growth Stimulator from Skull, Percutaneous Approach [One axis away]
  • 0NP040Z — Removal of Drainage Device from Skull, Percutaneous Endoscopic Approach [One axis away]
  • 0NP043Z — Removal of Infusion Device from Skull, Percutaneous Endoscopic Approach [One axis away]
  • 0NP044Z — Removal of Internal Fixation Device from Skull, Percutaneous Endoscopic Approach [One axis away]
  • 0NP045Z — Removal of External Fixation Device from Skull, Percutaneous Endoscopic Approach [One axis away]
  • 0NP047Z — Removal of Autologous Tissue Substitute from Skull, Percutaneous Endoscopic Approach [One axis away]
  • 0NP04JZ — Removal of Synthetic Substitute from Skull, Percutaneous Endoscopic Approach [One axis away]

Change history

No changes recorded for this code — unchanged since the FY2026 (April) baseline of the change ledger.