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ICD-10-PCS 2027 procedure code

07HM4YZInsertion of Other Device into Thymus, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Insertion of Other Device into Thymus, Perc Endo Approach

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 07HM4YZ

07HM4YZ is the ICD-10-PCS code for a insertion procedure on the thymus using a percutaneous endoscopic approach with other device. In ICD-10-PCS, insertion means putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part.

In plain terms, this corresponds to incision of lymphatic structures, the ICD-9-CM procedure title it maps to (40.0).

For a different body part, codes include 07HK4YZ (thoracic duct), 07HL4YZ (cisterna chyli), 07HN4YZ (lymphatic), 07HP4YZ (spleen) and 07HT4YZ (bone marrow).

The same procedure with a different approach is coded 07HM0YZ (open) and 07HM3YZ (percutaneous).

With a different device, use 07HM41Z (radioactive element) and 07HM43Z (infusion device).

It is an operating-room procedure in the MS-DRG logic for DRG 163 (Major Chest Procedures with MCC), DRG 164 (Major Chest Procedures with CC), DRG 165 (Major Chest Procedures without CC/MCC), DRG 628 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with MCC or Insertion of Antibiotic-eluting Bone Void Filler), DRG 629 (Other Endocrine, Nutritional and Metabolic O.R. Procedures with CC) and DRG 630 (Other Endocrine, Nutritional and Metabolic O.R. Procedures without CC/MCC), under the surgical categories “Major Chest Procedures”, “Other Endocrine, Nutritional and Metabolic O.R. Procedures”, “Other O.R. Procedures of the Blood and Blood Forming Organs” and 4 more.

It was added in FY2018, effective October 1, 2017.

What each character means

1. Section
0Medical and Surgical
2. Body System
7Lymphatic and Hemic Systems
3. Operation
HInsertion

Putting in a nonbiological appliance that monitors, assists, performs, or prevents a physiological function but does not physically take the place of a body part

Includes: Insertion of radioactive implant, insertion of central venous catheter

4. Body Part
MThymus

Includes: Thymus gland

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
YOther Device

Includes: Alfapump(R) system

7. Qualifier
ZNo Qualifier

Other versions of this procedure

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 →
  • 40.0Incision of lymphatic structuresapproximate

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
  • FY2018 (effective 10/1/2017): Added
  • No changes since FY2018.

Common questions about 07HM4YZ

Is 07HM4YZ a valid ICD-10-PCS code for 2027?

Yes. 07HM4YZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 07HM4YZ an O.R. procedure?

Yes. 07HM4YZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 07HM4YZ group to?

Depending on the principal diagnosis, 07HM4YZ can group to MS-DRG 163, MS-DRG 164, MS-DRG 165, MS-DRG 628, MS-DRG 629 and MS-DRG 630.

What is the ICD-9 procedure code for 07HM4YZ?

The CMS GEMs map 07HM4YZ to ICD-9-CM 40.0 (Incision of lymphatic structures).