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ICD-10-PCS 2027 procedure code

01950ZXDrainage of Median 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 01950ZX

01950ZX is the ICD-10-PCS code for a drainage procedure on the median 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), 01920ZX (phrenic nerve), 01930ZX (brachial plexus), 01940ZX (ulnar nerve), 01960ZX (radial nerve) and 16 more.

The same procedure with a different approach is coded 01953ZX (percutaneous) and 01954ZX (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
5Median Nerve

Includes: Anterior interosseous nerve; Palmar cutaneous 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 01950ZX

Is 01950ZX a valid ICD-10-PCS code for 2027?

Yes. 01950ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 01950ZX an O.R. procedure?

Yes. 01950ZX is an O.R. procedure in MS-DRG v44.0.

What DRG does 01950ZX group to?

Depending on the principal diagnosis, 01950ZX 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 01950ZX?

The CMS GEMs map 01950ZX to ICD-9-CM 04.12 (Open biopsy of cranial or peripheral nerve or ganglion).