ICD-10-PCS 2027 procedure code
09NM4ZZRelease Nasal Septum, Percutaneous Endoscopic 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 09NM4ZZ
09NM4ZZ is the ICD-10-PCS code for a release procedure on the nasal septum using a percutaneous endoscopic approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.
In plain terms, this corresponds to lysis of adhesions of nose, the ICD-9-CM procedure title it maps to (21.91).
For a different body part, codes include 09N04ZZ (right external ear), 09N14ZZ (left external ear), 09N34ZZ (right external auditory canal), 09N44ZZ (left external auditory canal), 09N74ZZ (right tympanic membrane), 09N84ZZ (left tympanic membrane) and 16 more.
The same procedure with a different approach is coded 09NM0ZZ (open), 09NM3ZZ (percutaneous) and 09NM8ZZ (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
- NRelease
Freeing a body part from an abnormal physical constraint by cutting or by the use of force
Some of the restraining tissue may be taken out but none of the body part is taken out
Includes: Adhesiolysis, carpal tunnel release
- 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
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 09N04ZZExternal Ear, Right
- 09N14ZZExternal Ear, Left
- 09N34ZZExternal Auditory Canal, Right
- 09N44ZZExternal Auditory Canal, Left
- 09N74ZZTympanic Membrane, Right
- 09N84ZZTympanic Membrane, Left
- 09NB4ZZMastoid Sinus, Right
- 09NC4ZZMastoid Sinus, Left
- 09NF4ZZEustachian Tube, Right
- 09NG4ZZEustachian Tube, Left
- 09NK4ZZNasal Mucosa and Soft Tissue
- 09NL4ZZNasal Turbinate
ICD-9-CM equivalent
Converter →- 21.91Lysis of adhesions 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 09NM4ZZ
Is 09NM4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 09NM4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 09NM4ZZ?
- The CMS GEMs map 09NM4ZZ to ICD-9-CM 21.91 (Lysis of adhesions of nose).