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ICD-10-PCS 2027 procedure code

079T4ZXDrainage of Bone Marrow, Percutaneous Endoscopic Approach, Diagnostic

✓ Valid for 2027

Short description: Drainage of Bone Marrow, 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 079T4ZX

079T4ZX is the ICD-10-PCS code for a drainage procedure on the bone marrow 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 bone marrow, the ICD-9-CM procedure title it maps to (41.31).

For a different body part, codes include 07904ZX (lymphatic, head), 07914ZX (lymphatic, right neck), 07924ZX (lymphatic, left neck), 07934ZX (lymphatic, right upper extremity), 07944ZX (lymphatic, left upper extremity), 07954ZX (lymphatic, right axillary) and 15 more.

The same procedure with a different approach is coded 079T0ZX (open) and 079T3ZX (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
7Lymphatic and Hemic Systems
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
TBone Marrow
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 →
  • 41.31Biopsy of bone marrowapproximate

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 079T4ZX

Is 079T4ZX a valid ICD-10-PCS code for 2027?

Yes. 079T4ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 079T4ZX?

The CMS GEMs map 079T4ZX to ICD-9-CM 41.31 (Biopsy of bone marrow).