ICD-10-PCS 2027 procedure code
09NW0ZZRelease Right Sphenoid Sinus, Open 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 09NW0ZZ
09NW0ZZ is the ICD-10-PCS code for a release procedure on the right sphenoid sinus using an open 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 other repair of nasal sinus, the ICD-9-CM procedure title it maps to (22.79).
For a different body part, codes include 09N00ZZ (right external ear), 09N10ZZ (left external ear), 09N30ZZ (right external auditory canal), 09N40ZZ (left external auditory canal), 09N50ZZ (right middle ear), 09N60ZZ (left middle ear) and 22 more.
The same procedure with a different approach is coded 09NW3ZZ (percutaneous), 09NW4ZZ (percutaneous endoscopic) and 09NW8ZZ (via natural or artificial opening endoscopic).
It is an operating-room procedure in the MS-DRG logic for DRG 135 (Sinus and Mastoid Procedures with CC/MCC) and DRG 136 (Sinus and Mastoid Procedures without CC/MCC), under the surgical category “Sinus and Mastoid 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
- 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
- WSphenoid Sinus, Right
- 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
- ZNo Qualifier
Other versions of this procedure
Different body part
- 09N00ZZExternal Ear, Right
- 09N10ZZExternal Ear, Left
- 09N30ZZExternal Auditory Canal, Right
- 09N40ZZExternal Auditory Canal, Left
- 09N50ZZMiddle Ear, Right
- 09N60ZZMiddle Ear, Left
- 09N70ZZTympanic Membrane, Right
- 09N80ZZTympanic Membrane, Left
- 09N90ZZAuditory Ossicle, Right
- 09NA0ZZAuditory Ossicle, Left
- 09NB0ZZMastoid Sinus, Right
- 09NC0ZZMastoid Sinus, Left
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 · Sinus and Mastoid Procedures
ICD-9-CM equivalent
Converter →- 22.79Other repair 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 09NW0ZZ
Is 09NW0ZZ a valid ICD-10-PCS code for 2027?
- Yes. 09NW0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 09NW0ZZ an O.R. procedure?
- Yes. 09NW0ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 09NW0ZZ group to?
- Depending on the principal diagnosis, 09NW0ZZ can group to MS-DRG 135 and MS-DRG 136.
What is the ICD-9 procedure code for 09NW0ZZ?
- The CMS GEMs map 09NW0ZZ to ICD-9-CM 22.79 (Other repair of nasal sinus).