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ICD-10-PCS 2027 procedure code

09010ZZAlteration of Left External Ear, Open Approach

✓ Valid for 2027O.R. procedure

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 09010ZZ

09010ZZ is the ICD-10-PCS code for a alteration procedure on the left external ear using an open approach. In ICD-10-PCS, alteration means modifying the anatomic structure of a body part without affecting the function of the body part.

In plain terms, this corresponds to other plastic repair of external ear, the ICD-9-CM procedure title it maps to (18.79).

For a different body part, codes include 09000ZZ (right external ear), 09020ZZ (bilateral external ear) and 090K0ZZ (nasal mucosa and soft tissue).

The same procedure with a different approach is coded 09013ZZ (percutaneous), 09014ZZ (percutaneous endoscopic) and 0901XZZ (external).

With a different device, use 090107Z (autologous tissue substitute), 09010JZ (synthetic substitute) and 09010KZ (nonautologous tissue substitute).

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), DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), DRG 579 (Other Skin, Subcutaneous Tissue and Breast Procedures with MCC), DRG 580 (Other Skin, Subcutaneous Tissue and Breast Procedures with CC) and DRG 581 (Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other Skin, Subcutaneous Tissue and Breast Procedures”, “Other O.R. Procedures for Injuries” and 1 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
9Ear, Nose, Sinus
3. Operation
0Alteration

Modifying the anatomic structure of a body part without affecting the function of the body part

Principal purpose is to improve appearance

Includes: Face lift, breast augmentation

4. Body Part
1External Ear, Left
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.

ICD-9-CM equivalent

Converter →
  • 18.79Other plastic repair of external 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 09010ZZ

Is 09010ZZ a valid ICD-10-PCS code for 2027?

Yes. 09010ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09010ZZ an O.R. procedure?

Yes. 09010ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 09010ZZ group to?

Depending on the principal diagnosis, 09010ZZ can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 579, MS-DRG 580 and MS-DRG 581.

What is the ICD-9 procedure code for 09010ZZ?

The CMS GEMs map 09010ZZ to ICD-9-CM 18.79 (Other plastic repair of external ear).