Skip to content
Dx

ICD-10-PCS 2027 procedure code

0NC50ZZExtirpation of Matter from Right Temporal Bone, Open Approach

✓ Valid for 2027O.R. procedure

Short description: Extirpation of Matter from R Temporal Bone, 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 0NC50ZZ

0NC50ZZ is the ICD-10-PCS code for a extirpation procedure on the right temporal bone using an open approach. In ICD-10-PCS, extirpation means taking or cutting out solid matter from a body part.

In plain terms, this corresponds to other craniotomy, the ICD-9-CM procedure title it maps to (01.24).

For a different body part, codes include 0NC10ZZ (frontal bone), 0NC30ZZ (right parietal bone), 0NC40ZZ (left parietal bone), 0NC60ZZ (left temporal bone), 0NC70ZZ (occipital bone), 0NCB0ZZ (nasal bone) and 15 more.

The same procedure with a different approach is coded 0NC53ZZ (percutaneous) and 0NC54ZZ (percutaneous endoscopic).

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 143 (Other Ear, Nose, Mouth and Throat 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”, “Other Ear, Nose, Mouth and Throat O.R. Procedures” and 4 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
NHead and Facial Bones
3. Operation
CExtirpation

Taking or cutting out solid matter from a body part

The solid matter may be an abnormal byproduct of a biological function or a foreign body; it may be imbedded in a body part or in the lumen of a tubular body part. The solid matter may or may not have been previously broken into pieces

Includes: Thrombectomy, choledocholithotomy

4. Body Part
5Temporal Bone, Right
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

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 →
  • 01.24Other craniotomyapproximate

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 0NC50ZZ

Is 0NC50ZZ a valid ICD-10-PCS code for 2027?

Yes. 0NC50ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NC50ZZ an O.R. procedure?

Yes. 0NC50ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NC50ZZ group to?

Depending on the principal diagnosis, 0NC50ZZ can group to MS-DRG 023, MS-DRG 024, MS-DRG 025, MS-DRG 026, MS-DRG 027 and MS-DRG 143.

What is the ICD-9 procedure code for 0NC50ZZ?

The CMS GEMs map 0NC50ZZ to ICD-9-CM 01.24 (Other craniotomy).