ICD-10-PCS 2027 procedure code
09C40ZZExtirpation of Matter from Left External Auditory Canal, Open Approach
Short description: Extirpate of Matter from L Ext Auditory Canal, Open Approach
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 09C40ZZ
09C40ZZ is the ICD-10-PCS code for a extirpation procedure on the left external auditory canal using an open approach. In ICD-10-PCS, extirpation means taking or cutting out solid matter 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 09C00ZZ (right external ear), 09C10ZZ (left external ear), 09C30ZZ (right external auditory canal), 09C50ZZ (right middle ear), 09C60ZZ (left middle ear), 09C70ZZ (right tympanic membrane) and 22 more.
The same procedure with a different approach is coded 09C43ZZ (percutaneous), 09C44ZZ (percutaneous endoscopic), 09C47ZZ (via natural or artificial opening), 09C48ZZ (via natural or artificial opening endoscopic) and 09C4XZZ (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
- CExtirpation
Taking or cutting out solid matter from a body part
The solid matter may be an abnormal byproduct of a biological function or a foreign body; it may be imbedded in a body part or in the lumen of a tubular body part. The solid matter may or may not have been previously broken into pieces
Includes: Thrombectomy, choledocholithotomy
- 4. Body Part
- 4External Auditory Canal, Left
Includes: External auditory meatus
- 5. Approach
- 0Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 09C00ZZExternal Ear, Right
- 09C10ZZExternal Ear, Left
- 09C30ZZExternal Auditory Canal, Right
- 09C50ZZMiddle Ear, Right
- 09C60ZZMiddle Ear, Left
- 09C70ZZTympanic Membrane, Right
- 09C80ZZTympanic Membrane, Left
- 09C90ZZAuditory Ossicle, Right
- 09CA0ZZAuditory Ossicle, Left
- 09CB0ZZMastoid Sinus, Right
- 09CC0ZZMastoid Sinus, Left
- 09CD0ZZInner Ear, Right
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 09C40ZZ
Is 09C40ZZ a valid ICD-10-PCS code for 2027?
- Yes. 09C40ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09C40ZZ?
- The CMS GEMs map 09C40ZZ to ICD-9-CM 18.02 (Incision of external auditory canal).