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ICD-10-PCS 2027 procedure code

09N1XZZRelease Left External Ear, External Approach

✓ Valid for 2027

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 09N1XZZ

09N1XZZ is the ICD-10-PCS code for a release procedure on the left external ear using an external approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.

In plain terms, this corresponds to other operations on external ear, the ICD-9-CM procedure title it maps to (18.9).

For a different body part, codes include 09N0XZZ (right external ear), 09N3XZZ (right external auditory canal), 09N4XZZ (left external auditory canal) and 09NKXZZ (nasal mucosa and soft tissue).

The same procedure with a different approach is coded 09N10ZZ (open), 09N13ZZ (percutaneous) and 09N14ZZ (percutaneous endoscopic).

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
9Ear, Nose, Sinus
3. Operation
NRelease

Freeing a body part from an abnormal physical constraint by cutting or by the use of force

Some of the restraining tissue may be taken out but none of the body part is taken out

Includes: Adhesiolysis, carpal tunnel release

4. Body Part
1External Ear, Left
5. Approach
XExternal

Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 18.9Other operations on 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 09N1XZZ

Is 09N1XZZ a valid ICD-10-PCS code for 2027?

Yes. 09N1XZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 09N1XZZ?

The CMS GEMs map 09N1XZZ to ICD-9-CM 18.9 (Other operations on external ear).