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ICD-10-PCS 2027 procedure code

099K4ZXDrainage of Nasal Mucosa and Soft Tissue, Percutaneous Endoscopic Approach, Diagnostic

✓ Valid for 2027

Short description: Drainage of Nose Sft Tiss, Perc Endo Approach, Diagn

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 099K4ZX

099K4ZX is the ICD-10-PCS code for a drainage procedure on the nasal mucosa and soft tissue using a percutaneous endoscopic approach (qualifier: diagnostic). In ICD-10-PCS, drainage means taking or letting out fluids and/or gases from a body part.

In plain terms, this corresponds to biopsy of nose, the ICD-9-CM procedure title it maps to (21.22).

For a different body part, codes include 09904ZX (right external ear), 09914ZX (left external ear), 09934ZX (right external auditory canal), 09944ZX (left external auditory canal), 09974ZX (right tympanic membrane), 09984ZX (left tympanic membrane) and 16 more.

The same procedure with a different approach is coded 099K0ZX (open), 099K3ZX (percutaneous), 099K7ZX (via natural or artificial opening), 099K8ZX (via natural or artificial opening endoscopic) and 099KXZX (external).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

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
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
KNasal Mucosa and Soft Tissue

Includes: Columella; External naris; Greater alar cartilage; Internal naris; Lateral nasal cartilage; Lesser alar cartilage; Nasal cavity; Nostril

5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure

6. Device
ZNo Device
7. Qualifier
XDiagnostic

Other versions of this procedure

Different qualifier

ICD-9-CM equivalent

Converter →
  • 21.22Biopsy of noseapproximate

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)
  • FY2018 (effective 10/1/2017): Title revised — was “Drainage of Nose, Percutaneous Endoscopic Approach, Diagnostic”

Common questions about 099K4ZX

Is 099K4ZX a valid ICD-10-PCS code for 2027?

Yes. 099K4ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 099K4ZX?

The CMS GEMs map 099K4ZX to ICD-9-CM 21.22 (Biopsy of nose).