ICD-10-PCS 2027 procedure code
09933ZXDrainage of Right External Auditory Canal, Percutaneous Approach, Diagnostic
Short description: Drainage of R Ext Auditory Canal, Perc Approach, 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 09933ZX
09933ZX is the ICD-10-PCS code for a drainage procedure on the right external auditory canal using a percutaneous 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 external ear, the ICD-9-CM procedure title it maps to (18.12).
For a different body part, codes include 09903ZX (right external ear), 09913ZX (left external ear), 09943ZX (left external auditory canal), 09973ZX (right tympanic membrane), 09983ZX (left tympanic membrane), 099B3ZX (right mastoid sinus) and 16 more.
The same procedure with a different approach is coded 09930ZX (open), 09934ZX (percutaneous endoscopic), 09937ZX (via natural or artificial opening), 09938ZX (via natural or artificial opening endoscopic) and 0993XZX (external).
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
- 3External Auditory Canal, Right
- 5. Approach
- 3Percutaneous
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- XDiagnostic
Other versions of this procedure
Different body part
- 09903ZXExternal Ear, Right
- 09913ZXExternal Ear, Left
- 09943ZXExternal Auditory Canal, Left
- 09973ZXTympanic Membrane, Right
- 09983ZXTympanic Membrane, Left
- 099B3ZXMastoid Sinus, Right
- 099C3ZXMastoid Sinus, Left
- 099F3ZXEustachian Tube, Right
- 099G3ZXEustachian Tube, Left
- 099K3ZXNasal Mucosa and Soft Tissue
- 099L3ZXNasal Turbinate
- 099M3ZXNasal Septum
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 18.12Biopsy of external 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 09933ZX
Is 09933ZX a valid ICD-10-PCS code for 2027?
- Yes. 09933ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09933ZX?
- The CMS GEMs map 09933ZX to ICD-9-CM 18.12 (Biopsy of external ear).