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ICD-10-PCS 2027 procedure code

09HE35ZInsertion of Single Channel Cochlear Prosthesis into Left Inner Ear, Percutaneous Approach

✓ Valid for 2027O.R. procedure

Short description: Insert Singl Chan Cochl Prosth in L Inner Ear, Perc

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 09HE35Z

09HE35Z is the ICD-10-PCS code for a insertion procedure on the left inner ear using a percutaneous approach with hearing device, single channel cochlear prosthesis. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

In plain terms, this corresponds to implantation or replacement of cochlear prosthetic device, single channel, the ICD-9-CM procedure title it maps to (20.97).

For a different body part, codes include 09HD35Z (right inner ear).

The same procedure with a different approach is coded 09HE05Z (open) and 09HE45Z (percutaneous endoscopic).

With a different device, use 09HE31Z (radioactive element), 09HE34Z (hearing device, bone conduction), 09HE36Z (hearing device, multiple channel cochlear prosthesis) and 09HE3SZ (hearing device).

It is an operating-room procedure in the MS-DRG logic for DRG 140 (Major Head and Neck Procedures with MCC), DRG 141 (Major Head and Neck Procedures with CC) and DRG 142 (Major Head and Neck Procedures without CC/MCC), under the surgical category “Major Head and Neck 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
HInsertion

Putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part

Includes: Insertion of radioactive implant, insertion of central venous catheter

4. Body Part
EInner Ear, Left

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

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
5Hearing Device, Single Channel Cochlear Prosthesis
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 →
  • 20.97Implantation or replacement of cochlear prosthetic device, single channelapproximate

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 09HE35Z

Is 09HE35Z a valid ICD-10-PCS code for 2027?

Yes. 09HE35Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09HE35Z an O.R. procedure?

Yes. 09HE35Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 09HE35Z group to?

Depending on the principal diagnosis, 09HE35Z can group to MS-DRG 140, MS-DRG 141 and MS-DRG 142.

What is the ICD-9 procedure code for 09HE35Z?

The CMS GEMs map 09HE35Z to ICD-9-CM 20.97 (Implantation or replacement of cochlear prosthetic device, single channel).