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ICD-10-PCS 2027 procedure code

009P4ZZDrainage of Glossopharyngeal Nerve, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Drainage of Glossopharyngeal Nerve, Perc Endo Approach

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 009P4ZZ

009P4ZZ is the ICD-10-PCS code for a drainage procedure on the glossopharyngeal nerve using a percutaneous endoscopic 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 incision of cranial and peripheral nerves, the ICD-9-CM procedure title it maps to (04.04).

For a different body part, codes include 00904ZZ (brain), 00914ZZ (cerebral meninges), 00924ZZ (dura mater), 00934ZZ (epidural space, intracranial), 00944ZZ (subdural space, intracranial), 00954ZZ (subarachnoid space, intracranial) and 24 more.

The same procedure with a different approach is coded 009P0ZZ (open) and 009P3ZZ (percutaneous).

With a different device, use 009P40Z (drainage device).

It is an operating-room procedure in the MS-DRG logic for DRG 040 (Peripheral, Cranial Nerve and Other Nervous System Procedures with MCC), DRG 041 (Peripheral, Cranial Nerve and Other Nervous System Procedures with CC or Peripheral Neurostimulator) and DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), under the surgical category “Peripheral, Cranial Nerve and Other Nervous System 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
0Central Nervous System and Cranial Nerves
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
PGlossopharyngeal Nerve

Includes: Carotid sinus nerve; Ninth cranial nerve; Tympanic nerve

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
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 →
  • 04.04Other incision of cranial and peripheral nervesapproximate

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 009P4ZZ

Is 009P4ZZ a valid ICD-10-PCS code for 2027?

Yes. 009P4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 009P4ZZ an O.R. procedure?

Yes. 009P4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 009P4ZZ group to?

Depending on the principal diagnosis, 009P4ZZ can group to MS-DRG 040, MS-DRG 041 and MS-DRG 042.

What is the ICD-9 procedure code for 009P4ZZ?

The CMS GEMs map 009P4ZZ to ICD-9-CM 04.04 (Other incision of cranial and peripheral nerves).