ICD-10-PCS 2027 procedure code
099M0ZXDrainage of Nasal Septum, Open Approach, Diagnostic
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 099M0ZX
099M0ZX is the ICD-10-PCS code for a drainage procedure on the nasal septum using an open 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 biopsy of nose, the ICD-9-CM procedure title it maps to (21.22).
For a different body part, codes include 09900ZX (right external ear), 09910ZX (left external ear), 09930ZX (right external auditory canal), 09940ZX (left external auditory canal), 09950ZX (right middle ear), 09960ZX (left middle ear) and 22 more.
The same procedure with a different approach is coded 099M3ZX (percutaneous), 099M4ZX (percutaneous endoscopic), 099M7ZX (via natural or artificial opening) and 099M8ZX (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
- MNasal Septum
Includes: Quadrangular cartilage; Septal cartilage; Vomer bone
- 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
- XDiagnostic
Other versions of this procedure
Different body part
- 09900ZXExternal Ear, Right
- 09910ZXExternal Ear, Left
- 09930ZXExternal Auditory Canal, Right
- 09940ZXExternal Auditory Canal, Left
- 09950ZXMiddle Ear, Right
- 09960ZXMiddle Ear, Left
- 09970ZXTympanic Membrane, Right
- 09980ZXTympanic Membrane, Left
- 09990ZXAuditory Ossicle, Right
- 099A0ZXAuditory Ossicle, Left
- 099B0ZXMastoid Sinus, Right
- 099C0ZXMastoid Sinus, Left
Different approach
Different qualifier
ICD-9-CM equivalent
Converter →- 21.22Biopsy of noseapproximate
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 099M0ZX
Is 099M0ZX a valid ICD-10-PCS code for 2027?
- Yes. 099M0ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 099M0ZX?
- The CMS GEMs map 099M0ZX to ICD-9-CM 21.22 (Biopsy of nose).