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ICD-10-PCS 2027 procedure code

0C9QXZZDrainage of 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 0C9QXZZ

0C9QXZZ is the ICD-10-PCS code for a drainage procedure on the adenoids using an external approach. In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

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 0C90XZZ (upper lip), 0C91XZZ (lower lip), 0C92XZZ (hard palate), 0C93XZZ (soft palate), 0C94XZZ (buccal mucosa), 0C95XZZ (upper gingiva) and 4 more.

The same procedure with a different approach is coded 0C9Q0ZZ (open) and 0C9Q3ZZ (percutaneous).

With a different device, use 0C9QX0Z (drainage device).

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
9Drainage

Taking or letting out fluids and/or gases from a body part

The qualifier DIAGNOSTIC is used to identify drainage procedures that are biopsies

Includes: Thoracentesis, incision and drainage

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

Different device

Different qualifier

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 0C9QXZZ

Is 0C9QXZZ a valid ICD-10-PCS code for 2027?

Yes. 0C9QXZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0C9QXZZ an O.R. procedure?

Yes. 0C9QXZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0C9QXZZ group to?

Depending on the principal diagnosis, 0C9QXZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 0C9QXZZ?

The CMS GEMs map 0C9QXZZ to ICD-9-CM 28.99 (Other operations on tonsils and adenoids).