Inpatient Procedure Code

07HM4YZ

Insertion of Other Device into Thymus, Percutaneous Endoscopic Approach

Insertion of Other Device into Thymus, Perc Endo Approach

Axis Breakdown

Every ICD-10-PCS code is exactly seven characters, one per axis. Each character's meaning is defined by its position in the code.

Position	Value	Meaning
1	Section0	Medical and Surgical
2	Body System7	Lymphatic and Hemic Systems
3	Root OperationH	Insertion 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
4	Body PartM	Thymus
5	Approach4	Percutaneous Endoscopic
6	DeviceY	Other Device
7	QualifierZ	No Qualifier

View all codes in this table

Potential MS-DRG Relationships (FY2026)

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 21 MS-DRGs:

MDC 04 — Major Chest Procedures: DRG 163, DRG 164, DRG 165
MDC 10 — Other Endocrine, Nutritional and Metabolic O.R. Procedures: DRG 628, DRG 629, DRG 630
MDC 16 — Other O.R. Procedures of the Blood and Blood Forming Organs: DRG 802, DRG 803, DRG 804
MDC 17 — Lymphoma and Leukemia with Major O.R. Procedures: DRG 820, DRG 821, DRG 822
MDC 17 — Myeloproliferative Disorders or Poorly Differentiated Neoplasms with Major O.R. Procedures: DRG 826, DRG 827, DRG 828
MDC 21 — Other O.R. Procedures for Injuries: DRG 907, DRG 908, DRG 909
MDC 24 — Other O.R. Procedures for Multiple Significant Trauma: DRG 957, DRG 958, DRG 959

From the CMS MS-DRG Definitions Manual, Appendix E. Actual DRG assignment depends on the complete claim.

Contextual Map

Every relationship of 07HM4YZ in one view: hierarchy, official tabular instructions in both directions, clinical classification, risk adjustment, MS-DRG participation, index terms and change history — each edge carrying the CMS source it derives from.

PCS table

07H[PCS table]
[object Object] — Section: [object Object] [Section]: “[object Object]”
[object Object] — Body System: [object Object] [Body System]: “[object Object]”
[object Object] — Operation: [object Object] [Operation]: “[object Object]”

MS-DRG participation (21)

DRG 163 — MAJOR CHEST PROCEDURES WITH MCC [MS-DRG]: “MAJOR CHEST PROCEDURES WITH MCC — Major Chest Procedures (MDC 04)”
DRG 164 — MAJOR CHEST PROCEDURES WITH CC [MS-DRG]: “MAJOR CHEST PROCEDURES WITH CC — Major Chest Procedures (MDC 04)”
DRG 165 — MAJOR CHEST PROCEDURES WITHOUT CC/MCC [MS-DRG]: “MAJOR CHEST PROCEDURES WITHOUT CC/MCC — Major Chest Procedures (MDC 04)”
DRG 628 — OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH MCC [MS-DRG]: “OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH MCC — Other Endocrine, Nutritional and Metabolic O.R. Procedures (MDC 10)”
DRG 629 — OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH CC [MS-DRG]: “OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITH CC — Other Endocrine, Nutritional and Metabolic O.R. Procedures (MDC 10)”
DRG 630 — OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITHOUT CC/MCC [MS-DRG]: “OTHER ENDOCRINE, NUTRITIONAL AND METABOLIC O.R. PROCEDURES WITHOUT CC/MCC — Other Endocrine, Nutritional and Metabolic O.R. Procedures (MDC 10)”
DRG 802 — OTHER O.R. PROCEDURES OF THE BLOOD AND BLOOD FORMING ORGANS WITH MCC [MS-DRG]: “OTHER O.R. PROCEDURES OF THE BLOOD AND BLOOD FORMING ORGANS WITH MCC — Other O.R. Procedures of the Blood and Blood Forming Organs (MDC 16)”
DRG 803 — OTHER O.R. PROCEDURES OF THE BLOOD AND BLOOD FORMING ORGANS WITH CC [MS-DRG]: “OTHER O.R. PROCEDURES OF THE BLOOD AND BLOOD FORMING ORGANS WITH CC — Other O.R. Procedures of the Blood and Blood Forming Organs (MDC 16)”
and 13 more

MDC crossing · diagnoses (1687)

MDC 04 — Diseases and Disorders of the Respiratory System [MDC crossing]: “Diseases and Disorders of the Respiratory System — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
MDC 10 — Endocrine, Nutritional and Metabolic Diseases and Disorders [MDC crossing]: “Endocrine, Nutritional and Metabolic Diseases and Disorders — the grouper's crossing between diagnoses and procedures: a principal diagnosis sets the MDC, and same-MDC procedures move the stay to its surgical DRGs.”
A02.22 — Salmonella pneumonia [Same-MDC diagnosis]: “Salmonella pneumonia — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
A06.5 — Amebic lung abscess [Same-MDC diagnosis]: “Amebic lung abscess — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
A15.0 — Tuberculosis of lung [Same-MDC diagnosis]: “Tuberculosis of lung — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
A15.4 — Tuberculosis of intrathoracic lymph nodes [Same-MDC diagnosis]: “Tuberculosis of intrathoracic lymph nodes — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
A15.5 — Tuberculosis of larynx, trachea and bronchus [Same-MDC diagnosis]: “Tuberculosis of larynx, trachea and bronchus — grouped in MDC 04, the diagnosis side of this code's crossing.” · check together
and 1682 more

Nearest codes

07HK4YZ — Insertion of Other Device into Thoracic Duct, Percutaneous Endoscopic Approach [One axis away]
07HL4YZ — Insertion of Other Device into Cisterna Chyli, Percutaneous Endoscopic Approach [One axis away]
07HM0YZ — Insertion of Other Device into Thymus, Open Approach [One axis away]
07HM3YZ — Insertion of Other Device into Thymus, Percutaneous Approach [One axis away]
07HM41Z — Insertion of Radioactive Element into Thymus, Percutaneous Endoscopic Approach [One axis away]
07HM43Z — Insertion of Infusion Device into Thymus, Percutaneous Endoscopic Approach [One axis away]
07HN4YZ — Insertion of Other Device into Lymphatic, Percutaneous Endoscopic Approach [One axis away]
07HP4YZ — Insertion of Other Device into Spleen, Percutaneous Endoscopic Approach [One axis away]

Change history

No changes recorded for this code — unchanged since the FY2026 (April) baseline of the change ledger.