ICD-10-PCS 2027 procedure code
09BC3ZXExcision of Left Mastoid Sinus, Percutaneous Approach, Diagnostic
Short description: Excision of Left Mastoid Sinus, Percutaneous 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 09BC3ZX
09BC3ZX is the ICD-10-PCS code for a excision procedure on the left mastoid sinus using a percutaneous approach (qualifier: diagnostic). In ICD-10-PCS, excision means cutting out or off, without replacement, a portion of 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 09B03ZX (right external ear), 09B13ZX (left external ear), 09B33ZX (right external auditory canal), 09B43ZX (left external auditory canal), 09B73ZX (right tympanic membrane), 09B83ZX (left tympanic membrane) and 16 more.
The same procedure with a different approach is coded 09BC0ZX (open), 09BC4ZX (percutaneous endoscopic) and 09BC8ZX (via natural or artificial opening endoscopic).
It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical category “Other Ear, Nose, Mouth and Throat O.R. Procedures”.
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
- BExcision
Cutting out or off, without replacement, a portion of a body part
The qualifier DIAGNOSTIC is used to identify excision procedures that are biopsies
Includes: Partial nephrectomy, liver biopsy
- 4. Body Part
- CMastoid Sinus, Left
Includes: Mastoid air cells
- 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
- 09B03ZXExternal Ear, Right
- 09B13ZXExternal Ear, Left
- 09B33ZXExternal Auditory Canal, Right
- 09B43ZXExternal Auditory Canal, Left
- 09B73ZXTympanic Membrane, Right
- 09B83ZXTympanic Membrane, Left
- 09BB3ZXMastoid Sinus, Right
- 09BF3ZXEustachian Tube, Right
- 09BG3ZXEustachian Tube, Left
- 09BK3ZXNasal Mucosa and Soft Tissue
- 09BL3ZXNasal Turbinate
- 09BM3ZXNasal Septum
Different approach
Different qualifier
MS-DRG v44.0 grouping
All DRGs →Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.
MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat · Other Ear, Nose, Mouth and Throat O.R. Procedures
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 09BC3ZX
Is 09BC3ZX a valid ICD-10-PCS code for 2027?
- Yes. 09BC3ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 09BC3ZX an O.R. procedure?
- Yes. 09BC3ZX is an O.R. procedure in MS-DRG v44.0.
What DRG does 09BC3ZX group to?
- Depending on the principal diagnosis, 09BC3ZX can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.
What is the ICD-9 procedure code for 09BC3ZX?
- The CMS GEMs map 09BC3ZX to ICD-9-CM 20.32 (Biopsy of middle and inner ear).