ICD-10-PCS 2027 procedure code
079T4ZZDrainage of Bone Marrow, Percutaneous Endoscopic 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 079T4ZZ
079T4ZZ is the ICD-10-PCS code for a drainage procedure on the bone marrow 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 aspiration of bone marrow from donor for transplant, the ICD-9-CM procedure title it maps to (41.91).
For a different body part, codes include 07904ZZ (lymphatic, head), 07914ZZ (lymphatic, right neck), 07924ZZ (lymphatic, left neck), 07934ZZ (lymphatic, right upper extremity), 07944ZZ (lymphatic, left upper extremity), 07954ZZ (lymphatic, right axillary) and 15 more.
The same procedure with a different approach is coded 079T0ZZ (open) and 079T3ZZ (percutaneous).
With a different device, use 079T40Z (drainage device).
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
- ZNo Qualifier
Other versions of this procedure
Different body part
- 07904ZZLymphatic, Head
- 07914ZZLymphatic, Right Neck
- 07924ZZLymphatic, Left Neck
- 07934ZZLymphatic, Right Upper Extremity
- 07944ZZLymphatic, Left Upper Extremity
- 07954ZZLymphatic, Right Axillary
- 07964ZZLymphatic, Left Axillary
- 07974ZZLymphatic, Thorax
- 07984ZZLymphatic, Internal Mammary, Right
- 07994ZZLymphatic, Internal Mammary, Left
- 079B4ZZLymphatic, Mesenteric
- 079C4ZZLymphatic, Pelvis
Different approach
Different device
Different qualifier
ICD-9-CM equivalent
Converter →- 41.91Aspiration of bone marrow from donor for transplantapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 079T4ZZ
Is 079T4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 079T4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 079T4ZZ?
- The CMS GEMs map 079T4ZZ to ICD-9-CM 41.91 (Aspiration of bone marrow from donor for transplant).