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ICD-10-PCS 2027 procedure code

00164ZBBypass Cerebral Ventricle to Cerebral Cisterns, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Bypass Cereb Vent to Cereb Cistern, Perc Endo Approach

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 00164ZB

00164ZB is the ICD-10-PCS code for a bypass procedure on the cerebral ventricle using a percutaneous endoscopic approach (qualifier: cerebral cisterns). In ICD-10-PCS, bypass means altering the route of passage of the contents of a tubular body part.

In plain terms, this corresponds to ventricular shunt to structure in head and neck, the ICD-9-CM procedure title it maps to (02.31).

The same procedure with a different approach is coded 00160ZB (open) and 00163ZB (percutaneous).

With a different device, use 001647B (autologous tissue substitute), 00164JB (synthetic substitute) and 00164KB (nonautologous tissue substitute).

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 820 (Lymphoma and Leukemia with Major O.R. Procedures with MCC), under the surgical categories “Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis”, “Craniotomy and endovascular intracranial procedures”, “Lymphoma and Leukemia with Major O.R. Procedures” and 3 more.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
0Central Nervous System and Cranial Nerves
3. Operation
1Bypass

Altering the route of passage of the contents of a tubular body part

Rerouting contents of a body part to a downstream area of the normal route, to a similar route and body part, or to an abnormal route and dissimilar body part. Includes one or more anastomoses, with or without the use of a device

Includes: Coronary artery bypass, colostomy formation

4. Body Part
6Cerebral Ventricle

Includes: Aqueduct of Sylvius; Cerebral aqueduct (Sylvius); Choroid plexus; Ependyma; Foramen of Monro (intraventricular); Fourth ventricle; Interventricular foramen (Monro); Left lateral ventricle; Right lateral ventricle; Third ventricle

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
BCerebral Cisterns

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

MDC 24 · Multiple Significant Trauma · Craniotomy for Multiple Significant Trauma

ICD-9-CM equivalent

Converter →
  • 02.31Ventricular shunt to structure in head and neckapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 00164ZB

Is 00164ZB a valid ICD-10-PCS code for 2027?

Yes. 00164ZB is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 00164ZB an O.R. procedure?

Yes. 00164ZB is an O.R. procedure in MS-DRG v44.0.

What DRG does 00164ZB group to?

Depending on the principal diagnosis, 00164ZB can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026, MS-DRG 027 and MS-DRG 820.

What is the ICD-9 procedure code for 00164ZB?

The CMS GEMs map 00164ZB to ICD-9-CM 02.31 (Ventricular shunt to structure in head and neck).