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ICD-10-PCS 2027 procedure code

0CNQXZZRelease Adenoids, External Approach

✓ 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 0CNQXZZ

0CNQXZZ is the ICD-10-PCS code for a release procedure on the adenoids using an external 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 tonsils and adenoids, the ICD-9-CM procedure title it maps to (28.99).

For a different body part, codes include 0CN0XZZ (upper lip), 0CN1XZZ (lower lip), 0CN2XZZ (hard palate), 0CN3XZZ (soft palate), 0CN4XZZ (buccal mucosa), 0CN5XZZ (upper gingiva) and 4 more.

The same procedure with a different approach is coded 0CNQ0ZZ (open) and 0CNQ3ZZ (percutaneous).

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
CMouth and Throat
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
QAdenoids

Includes: Pharyngeal tonsil

5. Approach
XExternal

Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane

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 →
  • 28.99Other operations on tonsils and adenoidsapproximate

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 0CNQXZZ

Is 0CNQXZZ a valid ICD-10-PCS code for 2027?

Yes. 0CNQXZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CNQXZZ an O.R. procedure?

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

What DRG does 0CNQXZZ group to?

Depending on the principal diagnosis, 0CNQXZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 0CNQXZZ?

The CMS GEMs map 0CNQXZZ to ICD-9-CM 28.99 (Other operations on tonsils and adenoids).