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ICD-10-PCS 2027 procedure code

09NN7ZZRelease Nasopharynx, Via Natural or Artificial Opening

✓ Valid for 2027O.R. procedure

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 09NN7ZZ

09NN7ZZ is the ICD-10-PCS code for a release procedure on the nasopharynx using a via natural or artificial opening 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 pharyngeal adhesions, the ICD-9-CM procedure title it maps to (29.54).

For a different body part, codes include 09N37ZZ (right external auditory canal), 09N47ZZ (left external auditory canal), 09N77ZZ (right tympanic membrane), 09N87ZZ (left tympanic membrane), 09NF7ZZ (right eustachian tube), 09NG7ZZ (left eustachian tube) and 1 more.

The same procedure with a different approach is coded 09NN0ZZ (open), 09NN3ZZ (percutaneous), 09NN4ZZ (percutaneous endoscopic) and 09NN8ZZ (via natural or artificial opening endoscopic).

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
NNasopharynx

Includes: Choana; Fossa of Rosenmuller; Pharyngeal recess; Rhinopharynx

5. Approach
7Via Natural or Artificial Opening

Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

ICD-9-CM equivalent

Converter →
  • 29.54Lysis of pharyngeal adhesionsapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about 09NN7ZZ

Is 09NN7ZZ a valid ICD-10-PCS code for 2027?

Yes. 09NN7ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 09NN7ZZ an O.R. procedure?

Yes. 09NN7ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 09NN7ZZ group to?

Depending on the principal diagnosis, 09NN7ZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 09NN7ZZ?

The CMS GEMs map 09NN7ZZ to ICD-9-CM 29.54 (Lysis of pharyngeal adhesions).