Skip to content
Dx

ICD-10-PCS 2027 procedure code

09WE8SZRevision of Hearing Device in Left Inner Ear, Via Natural or Artificial Opening Endoscopic

✓ Valid for 2027O.R. procedure

Short description: Revision of Hearing Device in Left Inner Ear, Endo

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 09WE8SZ

09WE8SZ is the ICD-10-PCS code for a revision procedure on the left inner ear using a via natural or artificial opening endoscopic approach with hearing device. In ICD-10-PCS, revision means correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device.

In plain terms, this corresponds to other operations on middle and inner ear, the ICD-9-CM procedure title it maps to (20.99).

For a different body part, codes include 09WD8SZ (right inner ear).

The same procedure with a different approach is coded 09WE0SZ (open) and 09WE7SZ (via natural or artificial opening).

It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical category “Other Ear, Nose, Mouth and Throat O.R. Procedures”.

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
9Ear, Nose, Sinus
3. Operation
WRevision

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin

Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis

4. Body Part
EInner Ear, Left

Includes: Bony labyrinth; Bony vestibule; Cochlea; Round window; Semicircular canal

5. Approach
8Via Natural or Artificial Opening Endoscopic

Entry of instrumentation through a natural or artificial external opening to reach and visualize the site of the procedure

6. Device
SHearing Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different body part

MS-DRG v44.0 grouping

All DRGs →

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

ICD-9-CM equivalent

Converter →
  • 20.99Other operations on middle and inner earapproximate

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 09WE8SZ

Is 09WE8SZ a valid ICD-10-PCS code for 2027?

Yes. 09WE8SZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09WE8SZ an O.R. procedure?

Yes. 09WE8SZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 09WE8SZ group to?

Depending on the principal diagnosis, 09WE8SZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 09WE8SZ?

The CMS GEMs map 09WE8SZ to ICD-9-CM 20.99 (Other operations on middle and inner ear).