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ICD-10-PCS 2027 procedure code

01920ZXDrainage of Phrenic Nerve, Open Approach, Diagnostic

✓ 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 01920ZX

01920ZX is the ICD-10-PCS code for a drainage procedure on the phrenic nerve using an open 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 open biopsy of cranial or peripheral nerve or ganglion, the ICD-9-CM procedure title it maps to (04.12).

For a different body part, codes include 01900ZX (cervical plexus), 01910ZX (cervical nerve), 01930ZX (brachial plexus), 01940ZX (ulnar nerve), 01950ZX (median nerve), 01960ZX (radial nerve) and 16 more.

The same procedure with a different approach is coded 01923ZX (percutaneous) and 01924ZX (percutaneous endoscopic).

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), DRG 042 (Peripheral, Cranial Nerve and Other Nervous System Procedures without CC/MCC), DRG 515 (Other Musculoskeletal System and Connective Tissue O.R. Procedures with MCC), DRG 516 (Other Musculoskeletal System and Connective Tissue O.R. Procedures with CC) and DRG 517 (Other Musculoskeletal System and Connective Tissue O.R. Procedures without CC/MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures”, “Other Musculoskeletal System and Connective Tissue O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

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
1Peripheral Nervous System
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
2Phrenic Nerve

Includes: Accessory phrenic nerve

5. Approach
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
ZNo Device
7. Qualifier
XDiagnostic

Other versions of this procedure

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 →
  • 04.12Open biopsy of cranial or peripheral nerve or ganglionapproximate

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 01920ZX

Is 01920ZX a valid ICD-10-PCS code for 2027?

Yes. 01920ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 01920ZX an O.R. procedure?

Yes. 01920ZX is an O.R. procedure in MS-DRG v44.0.

What DRG does 01920ZX group to?

Depending on the principal diagnosis, 01920ZX can group to MS-DRG 040, MS-DRG 041, MS-DRG 042, MS-DRG 515, MS-DRG 516 and MS-DRG 517.

What is the ICD-9 procedure code for 01920ZX?

The CMS GEMs map 01920ZX to ICD-9-CM 04.12 (Open biopsy of cranial or peripheral nerve or ganglion).