ICD-10-PCS 2027 procedure code
09988ZXDrainage of Left Tympanic Membrane, Via Natural or Artificial Opening Endoscopic, Diagnostic
Short description: Drainage of Left Tympanic Membrane, Endo, Diagn
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 09988ZX
09988ZX is the ICD-10-PCS code for a drainage procedure on the left tympanic membrane 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), 09958ZX (right middle ear), 09968ZX (left middle ear), 09978ZX (right tympanic membrane), 09998ZX (right auditory ossicle) and 20 more.
The same procedure with a different approach is coded 09980ZX (open), 09983ZX (percutaneous), 09984ZX (percutaneous endoscopic) and 09987ZX (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 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
- 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
- 8Tympanic Membrane, Left
Includes: Pars flaccida
- 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
- 09958ZXMiddle Ear, Right
- 09968ZXMiddle Ear, Left
- 09978ZXTympanic Membrane, Right
- 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
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 09988ZX
Is 09988ZX a valid ICD-10-PCS code for 2027?
- Yes. 09988ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09988ZX?
- The CMS GEMs map 09988ZX to ICD-9-CM 20.32 (Biopsy of middle and inner ear).