ICD-10-PCS 2027 procedure code
09958ZXDrainage of Right Middle Ear, Via Natural or Artificial Opening Endoscopic, Diagnostic
Short description: Drainage of Right Middle Ear, Endo, Diagn
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 09958ZX
09958ZX is the ICD-10-PCS code for a drainage procedure on the right middle ear using a via natural or artificial opening endoscopic approach (qualifier: diagnostic). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to biopsy of middle and inner ear, the ICD-9-CM procedure title it maps to (20.32).
For a different body part, codes include 09938ZX (right external auditory canal), 09948ZX (left external auditory canal), 09968ZX (left middle ear), 09978ZX (right tympanic membrane), 09988ZX (left tympanic membrane), 09998ZX (right auditory ossicle) and 20 more.
The same procedure with a different approach is coded 09950ZX (open) and 09957ZX (via natural or artificial opening).
It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.
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
- 9Drainage
Taking or letting out fluids and/or gases from a body part
The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies
Includes: Thoracentesis, incision and drainage
- 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
- XDiagnostic
Other versions of this procedure
Different body part
- 09938ZXExternal Auditory Canal, Right
- 09948ZXExternal Auditory Canal, Left
- 09968ZXMiddle Ear, Left
- 09978ZXTympanic Membrane, Right
- 09988ZXTympanic Membrane, Left
- 09998ZXAuditory Ossicle, Right
- 099A8ZXAuditory Ossicle, Left
- 099B8ZXMastoid Sinus, Right
- 099C8ZXMastoid Sinus, Left
- 099D8ZXInner Ear, Right
- 099E8ZXInner Ear, Left
- 099F8ZXEustachian Tube, Right
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 20.32Biopsy of middle and inner earapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2018 (effective 10/1/2017): Added
- No changes since FY2018.
Common questions about 09958ZX
Is 09958ZX a valid ICD-10-PCS code for 2027?
- Yes. 09958ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09958ZX?
- The CMS GEMs map 09958ZX to ICD-9-CM 20.32 (Biopsy of middle and inner ear).