00HE42Z ICD-10-PCS Code: Insertion of Monitoring Device into Cranial Nerve, Percutaneous Endoscopic Approach

MS-DRG Grouper Relationships (FY2026)

Potential MS-DRG participation — not a DRG assignment.

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 3 MS-DRGs:

• MDC 01 — Peripheral, Cranial Nerve and Other Nervous System Procedures: DRG 040, DRG 041, DRG 042

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

Related Codes

Same operation — other Body Part

Same table and root operation, differing only in the body part character.

00H042Z — Insertion of Monitoring Device into Brain, Percutaneous Endoscopic Approach, 00H642Z — Insertion of Monitoring Device into Cerebral Ventricle, Percutaneous Endoscopic Approach, 00HU42Z — Insertion of Monitoring Device into Spinal Canal, Percutaneous Endoscopic Approach, 00HV42Z — Insertion of Monitoring Device into Spinal Cord, Percutaneous Endoscopic Approach

Same operation — other Approach

Same table and root operation, differing only in the approach character.

00HE02Z — Insertion of Monitoring Device into Cranial Nerve, Open Approach, 00HE32Z — Insertion of Monitoring Device into Cranial Nerve, Percutaneous Approach

Same operation — other Device

Same table and root operation, differing only in the device character.

00HE41Z — Insertion of Radioactive Element into Cranial Nerve, Percutaneous Endoscopic Approach, 00HE43Z — Insertion of Infusion Device into Cranial Nerve, Percutaneous Endoscopic Approach, 00HE4MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach, 00HE4YZ — Insertion of Other Device into Cranial Nerve, Percutaneous Endoscopic Approach

Same procedure category (CCSR), other tables

AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under CNS procedures, NEC (Central Nervous System Procedures); listed here are the members in other PCS tables. Source: Clinical Classifications Software Refined (CCSR), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, November 2025.

008S4ZZ — Division of Hypoglossal Nerve, Percutaneous Endoscopic Approach, 008W0ZZ — Division of Cervical Spinal Cord, Open Approach, 008W3ZZ — Division of Cervical Spinal Cord, Percutaneous Approach, 008W4ZZ — Division of Cervical Spinal Cord, Percutaneous Endoscopic Approach, 008X0ZZ — Division of Thoracic Spinal Cord, Open Approach, 008X3ZZ — Division of Thoracic Spinal Cord, Percutaneous Approach, 008X4ZZ — Division of Thoracic Spinal Cord, Percutaneous Endoscopic Approach, 008Y0ZZ — Division of Lumbar Spinal Cord, Open Approach, 008Y3ZZ — Division of Lumbar Spinal Cord, Percutaneous Approach, 008Y4ZZ — Division of Lumbar Spinal Cord, Percutaneous Endoscopic Approach, 00K0XZ1 — Map Brain using Connectomic Analysis, External Approach, 00NF0ZZ — Release Olfactory Nerve, Open Approach, 00NF3ZZ — Release Olfactory Nerve, Percutaneous Approach, 00NF4ZZ — Release Olfactory Nerve, Percutaneous Endoscopic Approach, 00NG0ZZ — Release Optic Nerve, Open Approach, 00NG3ZZ — Release Optic Nerve, Percutaneous Approach, 00NG4ZZ — Release Optic Nerve, Percutaneous Endoscopic Approach, 00NH0ZZ — Release Oculomotor Nerve, Open Approach, 00NH3ZZ — Release Oculomotor Nerve, Percutaneous Approach, 00NH4ZZ — Release Oculomotor Nerve, Percutaneous Endoscopic Approach, +610 more

Contextual Map

Every relationship of 00HE42Z 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.

Run 00HE42Z with these 5 related codes in Claim Check

PCS table

• 00H[PCS table]— CMS ICD-10-PCS tables
• Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”— CMS ICD-10-PCS tables
• Central Nervous System and Cranial Nerves — Body System: Central Nervous System and Cranial Nerves[Body System]: “Central Nervous System and Cranial Nerves”— CMS ICD-10-PCS tables
• Insertion — Operation: Insertion[Operation]: “Insertion”— CMS ICD-10-PCS tables

MS-DRG participation

• DRG 040 — PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITH MCC[MS-DRG]: “PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITH MCC — Peripheral, Cranial Nerve and Other Nervous System Procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 041 — PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITH CC OR PERIPHERAL NEUROSTIMULATOR[MS-DRG]: “PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITH CC OR PERIPHERAL NEUROSTIMULATOR — Peripheral, Cranial Nerve and Other Nervous System Procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 042 — PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITHOUT CC/MCC[MS-DRG]: “PERIPHERAL, CRANIAL NERVE AND OTHER NERVOUS SYSTEM PROCEDURES WITHOUT CC/MCC — Peripheral, Cranial Nerve and Other Nervous System Procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026

Clinical classification (CCSR)

• CNS014 — CNS procedures, NEC[CCSR category]: “CNS procedures, NEC — Central Nervous System Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1

MDC crossing · diagnoses (2636)

• MDC 01 — Diseases and Disorders of the Nervous System[MDC crossing]: “Diseases and Disorders of the Nervous 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.”— CMS MS-DRG Definitions Manual · FY2026
• A02.21 — Salmonella meningitis[Same-MDC diagnosis]: “Salmonella meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A06.6 — Amebic brain abscess[Same-MDC diagnosis]: “Amebic brain abscess — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A17.0 — Tuberculous meningitis[Same-MDC diagnosis]: “Tuberculous meningitis — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A17.1 — Meningeal tuberculoma[Same-MDC diagnosis]: “Meningeal tuberculoma — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• A17.81 — Tuberculoma of brain and spinal cord[Same-MDC diagnosis]: “Tuberculoma of brain and spinal cord — grouped in MDC 01, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
• and 2631 more

Nearest codes

• 00H042Z — Insertion of Monitoring Device into Brain, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
• 00H642Z — Insertion of Monitoring Device into Cerebral Ventricle, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE02Z — Insertion of Monitoring Device into Cranial Nerve, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE32Z — Insertion of Monitoring Device into Cranial Nerve, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE41Z — Insertion of Radioactive Element into Cranial Nerve, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE43Z — Insertion of Infusion Device into Cranial Nerve, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE4MZ — Insertion of Neurostimulator Lead into Cranial Nerve, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
• 00HE4YZ — Insertion of Other Device into Cranial Nerve, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables