009C0ZX ICD-10-PCS Code: Drainage of Cerebellum, Open Approach, Diagnostic
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.
| Position | Value | Meaning |
|---|---|---|
| 1 | Section0 | Medical and Surgical |
| 2 | Body System0 | Central Nervous System and Cranial Nerves |
| 3 | Root Operation9 | Drainage Taking or letting out fluids and/or gases from a body part |
| 4 | Body PartC | Cerebellum |
| 5 | Approach0 | Open |
| 6 | DeviceZ | No Device |
| 7 | QualifierX | Diagnostic |
MS-DRG Grouper Relationships (FY2026)
Potential MS-DRG participation — not a DRG assignment.
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.
00980ZX — Drainage of Basal Ganglia, Open Approach, Diagnostic, 00990ZX — Drainage of Thalamus, Open Approach, Diagnostic, 009A0ZX — Drainage of Hypothalamus, Open Approach, Diagnostic, 009B0ZX — Drainage of Pons, Open Approach, Diagnostic, 009D0ZX — Drainage of Medulla Oblongata, Open Approach, Diagnostic, 009F0ZX — Drainage of Olfactory Nerve, Open Approach, Diagnostic, 009G0ZX — Drainage of Optic Nerve, Open Approach, Diagnostic, 009H0ZX — Drainage of Oculomotor Nerve, Open Approach, Diagnostic, +22 more
Same operation — other Approach
Same table and root operation, differing only in the approach character.
009C3ZX — Drainage of Cerebellum, Percutaneous Approach, Diagnostic, 009C4ZX — Drainage of Cerebellum, Percutaneous Endoscopic Approach, Diagnostic
Same operation — other Qualifier
Same table and root operation, differing only in the qualifier character.
009C0ZZ — Drainage of Cerebellum, Open Approach
Same procedure category (CCSR), other tables
AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under Minimally invasive CNS biopsy (Central Nervous System Procedures); listed here are the members in other PCS tables. Source: Clinical Classifications Software Refined (CCSR), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, November 2025.
00B03ZX — Excision of Brain, Percutaneous Approach, Diagnostic, 00B04ZX — Excision of Brain, Percutaneous Endoscopic Approach, Diagnostic, 00B10ZX — Excision of Cerebral Meninges, Open Approach, Diagnostic, 00B13ZX — Excision of Cerebral Meninges, Percutaneous Approach, Diagnostic, 00B14ZX — Excision of Cerebral Meninges, Percutaneous Endoscopic Approach, Diagnostic, 00B20ZX — Excision of Dura Mater, Open Approach, Diagnostic, 00B23ZX — Excision of Dura Mater, Percutaneous Approach, Diagnostic, 00B24ZX — Excision of Dura Mater, Percutaneous Endoscopic Approach, Diagnostic, 00B63ZX — Excision of Cerebral Ventricle, Percutaneous Approach, Diagnostic, 00B64ZX — Excision of Cerebral Ventricle, Percutaneous Endoscopic Approach, Diagnostic, 00B73ZX — Excision of Cerebral Hemisphere, Percutaneous Approach, Diagnostic, 00B74ZX — Excision of Cerebral Hemisphere, Percutaneous Endoscopic Approach, Diagnostic, 00B83ZX — Excision of Basal Ganglia, Percutaneous Approach, Diagnostic, 00B84ZX — Excision of Basal Ganglia, Percutaneous Endoscopic Approach, Diagnostic, 00B93ZX — Excision of Thalamus, Percutaneous Approach, Diagnostic, 00B94ZX — Excision of Thalamus, Percutaneous Endoscopic Approach, Diagnostic, 00BA3ZX — Excision of Hypothalamus, Percutaneous Approach, Diagnostic, 00BA4ZX — Excision of Hypothalamus, Percutaneous Endoscopic Approach, Diagnostic, 00BB3ZX — Excision of Pons, Percutaneous Approach, Diagnostic, 00BB4ZX — Excision of Pons, Percutaneous Endoscopic Approach, Diagnostic, +78 more
Contextual Map
Every relationship of 009C0ZX 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
- 009[PCS table]
- Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”
- Central Nervous System and Cranial Nerves — Body System: Central Nervous System and Cranial Nerves[Body System]: “Central Nervous System and Cranial Nerves”
- Drainage — Operation: Drainage[Operation]: “Drainage”
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
Clinical classification (CCSR)
- CNS001 — Minimally invasive CNS biopsy[CCSR category]: “Minimally invasive CNS biopsy — Central Nervous System Procedures”
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 009C0ZX + A02.21 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 009C0ZX + A06.6 together
- A17.0 — Tuberculous meningitis[Same-MDC diagnosis]: “Tuberculous meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.” · Check 009C0ZX + A17.0 together
- A17.1 — Meningeal tuberculoma[Same-MDC diagnosis]: “Meningeal tuberculoma — grouped in MDC 01, the diagnosis side of this code's crossing.” · Check 009C0ZX + A17.1 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 009C0ZX + A17.81 together
- and 3296 more
Nearest codes
- 00900ZX — Drainage of Brain, Open Approach, Diagnostic[One axis away]
- 00910ZX — Drainage of Cerebral Meninges, Open Approach, Diagnostic[One axis away]
- 00920ZX — Drainage of Dura Mater, Open Approach, Diagnostic[One axis away]
- 00930ZX — Drainage of Intracranial Epidural Space, Open Approach, Diagnostic[One axis away]
- 00940ZX — Drainage of Intracranial Subdural Space, Open Approach, Diagnostic[One axis away]
- 00950ZX — Drainage of Intracranial Subarachnoid Space, Open Approach, Diagnostic[One axis away]
- 00960ZX — Drainage of Cerebral Ventricle, Open Approach, Diagnostic[One axis away]
- 00970ZX — Drainage of Cerebral Hemisphere, Open Approach, Diagnostic[One axis away]
Change history
No changes recorded for this code. This ledger tracks additions, deletions and description changes from FY2026 (April) onward. Note changes are not tracked.