ICD-10-PCS 2027 procedure code
07JM4ZZInspection of Thymus, 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 07JM4ZZ
07JM4ZZ is the ICD-10-PCS code for a inspection procedure on the thymus using a percutaneous endoscopic approach. In ICD-10-PCS, inspection means visually and/or manually exploring a body part.
In plain terms, this corresponds to other and unspecified thoracoscopic operations on thymus, the ICD-9-CM procedure title it maps to (07.98).
For a different body part, codes include 07JK4ZZ (thoracic duct), 07JL4ZZ (cisterna chyli), 07JN4ZZ (lymphatic), 07JP4ZZ (spleen) and 07JT4ZZ (bone marrow).
The same procedure with a different approach is coded 07JM0ZZ (open) and 07JM3ZZ (percutaneous).
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 163 (Major Chest Procedures with MCC), DRG 164 (Major Chest Procedures with CC) and DRG 165 (Major Chest Procedures without CC/MCC), under the surgical categories “Peripheral, Cranial Nerve and Other Nervous System Procedures”, “Major Chest Procedures”, “Other Endocrine, Nutritional and Metabolic O.R. Procedures” and 5 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
- 7Lymphatic and Hemic Systems
- 3. Operation
- JInspection
Visually and/or manually exploring a body part
Visual exploration may be performed with or without optical instrumentation. Manual exploration may be performed directly or through intervening body layers
Includes: Diagnostic arthroscopy, exploratory laparotomy
- 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
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
Different approach
MS-DRG v44.0 grouping
All DRGs →Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.
MDC 01 · Diseases and Disorders of the Nervous System · Peripheral, Cranial Nerve and Other Nervous System Procedures
MDC 04 · Diseases and Disorders of the Respiratory System · Major Chest Procedures
MDC 10 · Endocrine, Nutritional and Metabolic Diseases and Disorders · Other Endocrine, Nutritional and Metabolic O.R. Procedures
MDC 16 · Diseases and Disorders of the Blood and Blood Forming Organs and Immunological Disorders · Other O.R. Procedures of the Blood and Blood Forming Organs
MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms · Lymphoma and Leukemia with Major O.R. Procedures
MDC 17 · Myeloproliferative Diseases and Disorders, Poorly Differentiated Neoplasms · Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures
- 826Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with MCCRW 4.7581
- 827Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures with CCRW 2.3896
- 828Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures without CC/MCCRW 1.6955
MDC 21 · Injuries, Poisonings and Toxic Effects of Drugs · Other O.R. Procedures for Injuries
MDC 24 · Multiple Significant Trauma · Other O.R. Procedures for Multiple Significant Trauma
ICD-9-CM equivalent
Converter →- 07.98Other and unspecified thoracoscopic operations on thymusapproximate
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 07JM4ZZ
Is 07JM4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 07JM4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 07JM4ZZ an O.R. procedure?
- Yes. 07JM4ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 07JM4ZZ group to?
- Depending on the principal diagnosis, 07JM4ZZ can group to MS-DRG 040, MS-DRG 041, MS-DRG 042, MS-DRG 163, MS-DRG 164 and MS-DRG 165.
What is the ICD-9 procedure code for 07JM4ZZ?
- The CMS GEMs map 07JM4ZZ to ICD-9-CM 07.98 (Other and unspecified thoracoscopic operations on thymus).