ICD-10-PCS 2027 procedure code
00NC4ZZRelease Cerebellum, Percutaneous Endoscopic 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 00NC4ZZ
00NC4ZZ is the ICD-10-PCS code for a release procedure on the cerebellum using a percutaneous endoscopic approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.
In plain terms, this corresponds to repair of brain, the ICD-9-CM procedure title it maps to (02.92).
For a different body part, codes include 00N04ZZ (brain), 00N14ZZ (cerebral meninges), 00N24ZZ (dura mater), 00N64ZZ (cerebral ventricle), 00N74ZZ (cerebral hemisphere), 00N84ZZ (basal ganglia) and 20 more.
The same procedure with a different approach is coded 00NC0ZZ (open) and 00NC3ZZ (percutaneous).
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
- NRelease
Freeing a body part from an abnormal physical constraint by cutting or by the use of force
Some of the restraining tissue may be taken out but none of the body part is taken out
Includes: Adhesiolysis, carpal tunnel release
- 4. Body Part
- CCerebellum
Includes: Culmen
- 5. Approach
- 4Percutaneous Endoscopic
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
Different approach
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 →- 02.92Repair 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 00NC4ZZ
Is 00NC4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 00NC4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 00NC4ZZ an O.R. procedure?
- Yes. 00NC4ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 00NC4ZZ group to?
- Depending on the principal diagnosis, 00NC4ZZ 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 00NC4ZZ?
- The CMS GEMs map 00NC4ZZ to ICD-9-CM 02.92 (Repair of brain).