ICD-10-PCS 2027 procedure code
009C0ZZDrainage of Cerebellum, Open Approach
Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data
About 009C0ZZ
009C0ZZ is the ICD-10-PCS code for a drainage procedure on the cerebellum using an open approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to other incision of brain, the ICD-9-CM procedure title it maps to (01.39).
For a different body part, codes include 00900ZZ (brain), 00910ZZ (cerebral meninges), 00920ZZ (dura mater), 00930ZZ (epidural space, intracranial), 00940ZZ (subdural space, intracranial), 00950ZZ (subarachnoid space, intracranial) and 24 more.
The same procedure with a different approach is coded 009C3ZZ (percutaneous) and 009C4ZZ (percutaneous endoscopic).
With a different device, use 009C00Z (drainage device).
It is an operating-room procedure in the MS-DRG logic for DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator), DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC), DRG 025 (Craniotomy and Endovascular Intracranial Procedures with MCC), DRG 026 (Craniotomy and Endovascular Intracranial Procedures with CC), DRG 027 (Craniotomy and Endovascular Intracranial Procedures without CC/MCC) and DRG 907 (Other O.R. Procedures for Injuries with MCC), under the surgical categories “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures”, “Other O.R. Procedures for Injuries” and 1 more.
It has been valid since ICD-10-PCS took effect on October 1, 2015.
What each character means
- 1. Section
- 0Medical and Surgical
- 2. Body System
- 0Central Nervous System and Cranial Nerves
- 3. Operation
- 9Drainage
Taking or letting out fluids and/or gases from a body part
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies
Includes: Thoracentesis, incision and drainage
- 4. Body Part
- CCerebellum
Includes: Culmen
- 5. Approach
- 0Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
Different approach
Different device
Different qualifier
MS-DRG v44.0 grouping
All DRGs →Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.
MDC 01 · Diseases and Disorders of the Nervous System · Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis
MDC 01 · Diseases and Disorders of the Nervous System · Craniotomy and endovascular intracranial procedures
MDC 21 · Injuries, Poisonings and Toxic Effects of Drugs · Other O.R. Procedures for Injuries
MDC 24 · Multiple Significant Trauma · Craniotomy for Multiple Significant Trauma
ICD-9-CM equivalent
Converter →- 01.39Other incision of brainapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 009C0ZZ
Is 009C0ZZ a valid ICD-10-PCS code for 2027?
- Yes. 009C0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 009C0ZZ an O.R. procedure?
- Yes. 009C0ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 009C0ZZ group to?
- Depending on the principal diagnosis, 009C0ZZ can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026, MS-DRG 027 and MS-DRG 907.
What is the ICD-9 procedure code for 009C0ZZ?
- The CMS GEMs map 009C0ZZ to ICD-9-CM 01.39 (Other incision of brain).