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ICD-10-PCS 2027 procedure code

0N9630ZDrainage of Left Temporal Bone with Drainage Device, Percutaneous Approach

✓ Valid for 2027

Short description: Drainage of Left Temporal Bone with Drain Dev, Perc 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 0N9630Z

0N9630Z is the ICD-10-PCS code for a drainage procedure on the left temporal bone using a percutaneous approach with drainage device. 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 cranial puncture, the ICD-9-CM procedure title it maps to (01.09).

For a different body part, codes include 0N9030Z (skull), 0N9130Z (frontal bone), 0N9330Z (right parietal bone), 0N9430Z (left parietal bone), 0N9530Z (right temporal bone), 0N9730Z (occipital bone) and 16 more.

The same procedure with a different approach is coded 0N9600Z (open) and 0N9640Z (percutaneous endoscopic).

With a different device, use 0N963ZZ (no device).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

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
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
6Temporal Bone, Left

Includes: Mastoid process; Petrous part of temporal bone; Tympanic part of temporal bone; Zygomatic process of temporal bone

5. Approach
3Percutaneous

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure

6. Device
0Drainage Device

Includes: Cystostomy tube; Foley catheter; Percutaneous nephrostomy catheter; Thoracostomy tube

7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different device

ICD-9-CM equivalent

Converter →
  • 01.09Other cranial punctureapproximate

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 0N9630Z

Is 0N9630Z a valid ICD-10-PCS code for 2027?

Yes. 0N9630Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0N9630Z?

The CMS GEMs map 0N9630Z to ICD-9-CM 01.09 (Other cranial puncture).