ICD-10-PCS 2027 procedure code
099M40ZDrainage of Nasal Septum with Drainage Device, Percutaneous Endoscopic Approach
Short description: Drainage of Nasal Septum with Drain Dev, Perc Endo 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 099M40Z
099M40Z is the ICD-10-PCS code for a drainage procedure on the nasal septum using a percutaneous endoscopic approach with drainage device. 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 nose, the ICD-9-CM procedure title it maps to (21.1).
For a different body part, codes include 099040Z (right external ear), 099140Z (left external ear), 099340Z (right external auditory canal), 099440Z (left external auditory canal), 099740Z (right tympanic membrane), 099840Z (left tympanic membrane) and 16 more.
The same procedure with a different approach is coded 099M00Z (open), 099M30Z (percutaneous), 099M70Z (via natural or artificial opening) and 099M80Z (via natural or artificial opening endoscopic).
With a different device, use 099M4ZZ (no 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
- MNasal Septum
Includes: Quadrangular cartilage; Septal cartilage; Vomer bone
- 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
- 0Drainage Device
Includes: Cystostomy tube; Foley catheter; Percutaneous nephrostomy catheter; Thoracostomy tube
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 099040ZExternal Ear, Right
- 099140ZExternal Ear, Left
- 099340ZExternal Auditory Canal, Right
- 099440ZExternal Auditory Canal, Left
- 099740ZTympanic Membrane, Right
- 099840ZTympanic Membrane, Left
- 099B40ZMastoid Sinus, Right
- 099C40ZMastoid Sinus, Left
- 099F40ZEustachian Tube, Right
- 099G40ZEustachian Tube, Left
- 099K40ZNasal Mucosa and Soft Tissue
- 099L40ZNasal Turbinate
Different approach
Different device
ICD-9-CM equivalent
Converter →- 21.1Incision 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 099M40Z
Is 099M40Z a valid ICD-10-PCS code for 2027?
- Yes. 099M40Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 099M40Z?
- The CMS GEMs map 099M40Z to ICD-9-CM 21.1 (Incision of nose).