ICD-10-PCS 2027 procedure code
099S4ZXDrainage of Right Frontal Sinus, Percutaneous Endoscopic Approach, Diagnostic
Short description: Drainage of Right Frontal Sinus, Perc Endo 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 099S4ZX
099S4ZX is the ICD-10-PCS code for a drainage procedure on the right frontal sinus using a percutaneous endoscopic 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 closed [endoscopic] [needle] biopsy of nasal sinus, the ICD-9-CM procedure title it maps to (22.11).
For a different body part, codes include 09904ZX (right external ear), 09914ZX (left external ear), 09934ZX (right external auditory canal), 09944ZX (left external auditory canal), 09974ZX (right tympanic membrane), 09984ZX (left tympanic membrane) and 16 more.
The same procedure with a different approach is coded 099S0ZX (open), 099S3ZX (percutaneous), 099S7ZX (via natural or artificial opening) and 099S8ZX (via natural or artificial opening endoscopic).
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
- SFrontal Sinus, Right
- 5. Approach
- 4Percutaneous Endoscopic
Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- XDiagnostic
Other versions of this procedure
Different body part
- 09904ZXExternal Ear, Right
- 09914ZXExternal Ear, Left
- 09934ZXExternal Auditory Canal, Right
- 09944ZXExternal Auditory Canal, Left
- 09974ZXTympanic Membrane, Right
- 09984ZXTympanic Membrane, Left
- 099B4ZXMastoid Sinus, Right
- 099C4ZXMastoid Sinus, Left
- 099F4ZXEustachian Tube, Right
- 099G4ZXEustachian Tube, Left
- 099K4ZXNasal Mucosa and Soft Tissue
- 099L4ZXNasal Turbinate
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 22.11Closed [endoscopic] [needle] biopsy of nasal sinusapproximate
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 099S4ZX
Is 099S4ZX a valid ICD-10-PCS code for 2027?
- Yes. 099S4ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 099S4ZX?
- The CMS GEMs map 099S4ZX to ICD-9-CM 22.11 (Closed [endoscopic] [needle] biopsy of nasal sinus).