ICD-10-PCS 2027 procedure code
09947ZZDrainage of Left External Auditory Canal, Via Natural or Artificial Opening
Short description: Drainage of Left External Auditory Canal, Via Opening
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 09947ZZ
09947ZZ is the ICD-10-PCS code for a drainage procedure on the left external auditory canal using a via natural or artificial opening 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 incision of external auditory canal, the ICD-9-CM procedure title it maps to (18.02).
For a different body part, codes include 09937ZZ (right external auditory canal), 09957ZZ (right middle ear), 09967ZZ (left middle ear), 09977ZZ (right tympanic membrane), 09987ZZ (left tympanic membrane), 09997ZZ (right auditory ossicle) and 20 more.
The same procedure with a different approach is coded 09940ZZ (open), 09943ZZ (percutaneous), 09944ZZ (percutaneous endoscopic), 09948ZZ (via natural or artificial opening endoscopic) and 0994XZZ (external).
With a different device, use 099470Z (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
- 4External Auditory Canal, Left
Includes: External auditory meatus
- 5. Approach
- 7Via Natural or Artificial Opening
Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 09937ZZExternal Auditory Canal, Right
- 09957ZZMiddle Ear, Right
- 09967ZZMiddle Ear, Left
- 09977ZZTympanic Membrane, Right
- 09987ZZTympanic Membrane, Left
- 09997ZZAuditory Ossicle, Right
- 099A7ZZAuditory Ossicle, Left
- 099B7ZZMastoid Sinus, Right
- 099C7ZZMastoid Sinus, Left
- 099D7ZZInner Ear, Right
- 099E7ZZInner Ear, Left
- 099F7ZZEustachian Tube, Right
Different approach
Different device
Different qualifier
ICD-9-CM equivalent
Converter →- 18.02Incision of external auditory canalapproximate
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 09947ZZ
Is 09947ZZ a valid ICD-10-PCS code for 2027?
- Yes. 09947ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09947ZZ?
- The CMS GEMs map 09947ZZ to ICD-9-CM 18.02 (Incision of external auditory canal).