ICD-10-PCS 2027 procedure code
09N78ZZRelease Right Tympanic Membrane, Via Natural or Artificial Opening Endoscopic
Short description: Release Right Tympanic Membrane, Endo
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 09N78ZZ
09N78ZZ is the ICD-10-PCS code for a release procedure on the right tympanic membrane using a via natural or artificial opening 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 other operations on middle and inner ear, the ICD-9-CM procedure title it maps to (20.99).
For a different body part, codes include 09N38ZZ (right external auditory canal), 09N48ZZ (left external auditory canal), 09N58ZZ (right middle ear), 09N68ZZ (left middle ear), 09N88ZZ (left tympanic membrane), 09N98ZZ (right auditory ossicle) and 20 more.
The same procedure with a different approach is coded 09N70ZZ (open), 09N73ZZ (percutaneous), 09N74ZZ (percutaneous endoscopic) and 09N77ZZ (via natural or artificial opening).
It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical category “Other Ear, Nose, Mouth and Throat O.R. 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
- 7Tympanic Membrane, Right
- 5. Approach
- 8Via Natural or Artificial Opening Endoscopic
Entry of instrumentation through a natural or artificial external opening 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
- 09N38ZZExternal Auditory Canal, Right
- 09N48ZZExternal Auditory Canal, Left
- 09N58ZZMiddle Ear, Right
- 09N68ZZMiddle Ear, Left
- 09N88ZZTympanic Membrane, Left
- 09N98ZZAuditory Ossicle, Right
- 09NA8ZZAuditory Ossicle, Left
- 09NB8ZZMastoid Sinus, Right
- 09NC8ZZMastoid Sinus, Left
- 09ND8ZZInner Ear, Right
- 09NE8ZZInner Ear, Left
- 09NF8ZZEustachian Tube, Right
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 · Other Ear, Nose, Mouth and Throat O.R. Procedures
ICD-9-CM equivalent
Converter →- 20.99Other operations on middle and inner earapproximate
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 09N78ZZ
Is 09N78ZZ a valid ICD-10-PCS code for 2027?
- Yes. 09N78ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 09N78ZZ an O.R. procedure?
- Yes. 09N78ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 09N78ZZ group to?
- Depending on the principal diagnosis, 09N78ZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.
What is the ICD-9 procedure code for 09N78ZZ?
- The CMS GEMs map 09N78ZZ to ICD-9-CM 20.99 (Other operations on middle and inner ear).