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ICD-10-PCS 2027 procedure code

09558ZZDestruction of Right Middle Ear, Via Natural or Artificial Opening Endoscopic

✓ Valid for 2027O.R. procedure

Short description: Destruction of Right Middle Ear, Endo

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 09558ZZ

09558ZZ is the ICD-10-PCS code for a destruction procedure on the right middle ear using a via natural or artificial opening endoscopic approach. In ICD-10-PCS, destruction means physical eradication of all or a portion of a body part by the direct use of energy, force, or a destructive agent.

In plain terms, this corresponds to other excision of middle ear, the ICD-9-CM procedure title it maps to (20.59).

For a different body part, codes include 09538ZZ (right external auditory canal), 09548ZZ (left external auditory canal), 09568ZZ (left middle ear), 09578ZZ (right tympanic membrane), 09588ZZ (left tympanic membrane), 09598ZZ (right auditory ossicle) and 20 more.

The same procedure with a different approach is coded 09550ZZ (open).

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 was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
9Ear, Nose, Sinus
3. Operation
5Destruction

Physical eradication of all or a portion of a body part by the direct use of energy, force, or a destructive agent

None of the body part is physically taken out

Includes: Fulguration of rectal polyp, cautery of skin lesion

4. Body Part
5Middle Ear, Right
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
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different approach

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 →
  • 20.59Other excision of middle 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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 09558ZZ

Is 09558ZZ a valid ICD-10-PCS code for 2027?

Yes. 09558ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09558ZZ an O.R. procedure?

Yes. 09558ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 09558ZZ group to?

Depending on the principal diagnosis, 09558ZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 09558ZZ?

The CMS GEMs map 09558ZZ to ICD-9-CM 20.59 (Other excision of middle ear).