ICD-10-PCS 2027 procedure code
099G8ZZDrainage of Left Eustachian Tube, Via Natural or Artificial Opening Endoscopic
Short description: Drainage of Left Eustachian Tube, Endo
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 099G8ZZ
099G8ZZ is the ICD-10-PCS code for a drainage procedure on the left eustachian tube using a via natural or artificial opening endoscopic approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.
In plain terms, this corresponds to operations on eustachian tube, the ICD-9-CM procedure title it maps to (20.8).
For a different body part, codes include 09938ZZ (right external auditory canal), 09948ZZ (left external auditory canal), 09958ZZ (right middle ear), 09968ZZ (left middle ear), 09978ZZ (right tympanic membrane), 09988ZZ (left tympanic membrane) and 20 more.
The same procedure with a different approach is coded 099G0ZZ (open), 099G3ZZ (percutaneous), 099G4ZZ (percutaneous endoscopic) and 099G7ZZ (via natural or artificial opening).
With a different device, use 099G80Z (drainage device).
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
- GEustachian Tube, Left
Includes: Auditory tube; Pharyngotympanic tube
- 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 body part
- 09938ZZExternal Auditory Canal, Right
- 09948ZZExternal Auditory Canal, Left
- 09958ZZMiddle Ear, Right
- 09968ZZMiddle Ear, Left
- 09978ZZTympanic Membrane, Right
- 09988ZZTympanic Membrane, Left
- 09998ZZAuditory Ossicle, Right
- 099A8ZZAuditory Ossicle, Left
- 099B8ZZMastoid Sinus, Right
- 099C8ZZMastoid Sinus, Left
- 099D8ZZInner Ear, Right
- 099E8ZZInner Ear, Left
Different approach
Different device
Different qualifier
ICD-9-CM equivalent
Converter →- 20.8Operations on eustachian tubeapproximate
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 099G8ZZ
Is 099G8ZZ a valid ICD-10-PCS code for 2027?
- Yes. 099G8ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 099G8ZZ?
- The CMS GEMs map 099G8ZZ to ICD-9-CM 20.8 (Operations on eustachian tube).