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ICD-10-PCS 2027 procedure code

0M9P4ZXDrainage of Left Knee Bursa and Ligament, Percutaneous Endoscopic Approach, Diagnostic

✓ Valid for 2027

Short description: Drainage of L Knee Bursa/Lig, Perc Endo Approach, Diagn

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 0M9P4ZX

0M9P4ZX is the ICD-10-PCS code for a drainage procedure on the left knee bursa and ligament 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 joint structure, knee and other diagnostic procedures on muscle, tendon, fascia, and bursa, including that of hand, the ICD-9-CM procedure titles it maps to (80.36 and 83.29).

For a different body part, codes include 0M904ZX (head and neck bursa and ligament), 0M914ZX (right shoulder bursa and ligament), 0M924ZX (left shoulder bursa and ligament), 0M934ZX (right elbow bursa and ligament), 0M944ZX (left elbow bursa and ligament), 0M954ZX (right wrist bursa and ligament) and 21 more.

The same procedure with a different approach is coded 0M9P0ZX (open) and 0M9P3ZX (percutaneous).

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
MBursae and Ligaments
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
PKnee Bursa and Ligament, Left

Includes: Anterior cruciate ligament (ACL); Lateral collateral ligament (LCL); Ligament of head of fibula; Medial collateral ligament (MCL); Patellar ligament; Popliteal ligament; Posterior cruciate ligament (PCL); Prepatellar bursa

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 →
  • 80.36Biopsy of joint structure, kneeapproximate
  • 83.29Other diagnostic procedures on muscle, tendon, fascia, and bursa, including that of handapproximate

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 0M9P4ZX

Is 0M9P4ZX a valid ICD-10-PCS code for 2027?

Yes. 0M9P4ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0M9P4ZX?

The CMS GEMs map 0M9P4ZX to ICD-9-CM 80.36 (Biopsy of joint structure, knee) and 83.29 (Other diagnostic procedures on muscle, tendon, fascia, and bursa, including that of hand).