0NJ04ZZ ICD-10-PCS Code: Inspection of Skull, Percutaneous Endoscopic 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 SystemN | Head and Facial Bones |
| 3 | Root OperationJ | Inspection Visually and/or manually exploring a body part |
| 4 | Body Part0 | Skull |
| 5 | Approach4 | Percutaneous Endoscopic |
| 6 | DeviceZ | No Device |
| 7 | QualifierZ | No Qualifier |
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 14 MS-DRGs:
- MDC 01 — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis: DRG 023, DRG 024
- MDC 01 — Craniotomy and endovascular intracranial procedures: DRG 025, DRG 026, DRG 027
- MDC 08 — Biopsies of Musculoskeletal System and Connective Tissue: DRG 477, DRG 478, DRG 479
- 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.
Related Codes
Same operation — other Body Part
Same table and root operation, differing only in the body part character.
0NJB4ZZ — Inspection of Nasal Bone, Percutaneous Endoscopic Approach, 0NJW4ZZ — Inspection of Facial Bone, Percutaneous Endoscopic Approach
Same operation — other Approach
Same table and root operation, differing only in the approach character.
0NJ00ZZ — Inspection of Skull, Open Approach, 0NJ03ZZ — Inspection of Skull, Percutaneous Approach, 0NJ0XZZ — Inspection of Skull, External Approach
Same procedure category (CCSR), other tables
AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under Bone and joint biopsy (Musculoskeletal, Subcutaneous Tissue, and Fascia 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.
0NBR4ZX — Excision of Maxilla, Percutaneous Endoscopic Approach, Diagnostic, 0NBT0ZX — Excision of Right Mandible, Open Approach, Diagnostic, 0NBT3ZX — Excision of Right Mandible, Percutaneous Approach, Diagnostic, 0NBT4ZX — Excision of Right Mandible, Percutaneous Endoscopic Approach, Diagnostic, 0NBV0ZX — Excision of Left Mandible, Open Approach, Diagnostic, 0NBV3ZX — Excision of Left Mandible, Percutaneous Approach, Diagnostic, 0NBV4ZX — Excision of Left Mandible, Percutaneous Endoscopic Approach, Diagnostic, 0NBX0ZX — Excision of Hyoid Bone, Open Approach, Diagnostic, 0NBX3ZX — Excision of Hyoid Bone, Percutaneous Approach, Diagnostic, 0NBX4ZX — Excision of Hyoid Bone, Percutaneous Endoscopic Approach, Diagnostic, 0P900ZX — Drainage of Sternum, Open Approach, Diagnostic, 0P903ZX — Drainage of Sternum, Percutaneous Approach, Diagnostic, 0P904ZX — Drainage of Sternum, Percutaneous Endoscopic Approach, Diagnostic, 0P910ZX — Drainage of 1 to 2 Ribs, Open Approach, Diagnostic, 0P913ZX — Drainage of 1 to 2 Ribs, Percutaneous Approach, Diagnostic, 0P914ZX — Drainage of 1 to 2 Ribs, Percutaneous Endoscopic Approach, Diagnostic, 0P920ZX — Drainage of 3 or More Ribs, Open Approach, Diagnostic, 0P923ZX — Drainage of 3 or More Ribs, Percutaneous Approach, Diagnostic, 0P924ZX — Drainage of 3 or More Ribs, Percutaneous Endoscopic Approach, Diagnostic, 0P930ZX — Drainage of Cervical Vertebra, Open Approach, Diagnostic, +897 more
Contextual Map
Every relationship of 0NJ04ZZ 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 0NJ04ZZ with these 5 related codes in Claim Check
PCS table
- 0NJ[PCS table]— CMS ICD-10-PCS tables
- Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”— CMS ICD-10-PCS tables
- Head and Facial Bones — Body System: Head and Facial Bones[Body System]: “Head and Facial Bones”— CMS ICD-10-PCS tables
- Inspection — Operation: Inspection[Operation]: “Inspection”— CMS ICD-10-PCS tables
MS-DRG participation (14)
- DRG 023 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR[MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITH MCC OR ANTINEOPLASTIC IMPLANT OR EPILEPSY WITH NEUROSTIMULATOR — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 024 — CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC[MS-DRG]: “CRANIOTOMY WITH MAJOR DEVICE IMPLANT OR ACUTE COMPLEX CNS PRINCIPAL DIAGNOSIS WITHOUT MCC — Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 025 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 026 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITH CC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 027 — CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC[MS-DRG]: “CRANIOTOMY AND ENDOVASCULAR INTRACRANIAL PROCEDURES WITHOUT CC/MCC — Craniotomy and endovascular intracranial procedures (MDC 01)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 477 — BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC[MS-DRG]: “BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH MCC — Biopsies of Musculoskeletal System and Connective Tissue (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 478 — BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC[MS-DRG]: “BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITH CC — Biopsies of Musculoskeletal System and Connective Tissue (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 479 — BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC[MS-DRG]: “BIOPSIES OF MUSCULOSKELETAL SYSTEM AND CONNECTIVE TISSUE WITHOUT CC/MCC — Biopsies of Musculoskeletal System and Connective Tissue (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- and 6 more
Clinical classification (CCSR)
- MST002 — Bone and joint biopsy[CCSR category]: “Bone and joint biopsy — Musculoskeletal, Subcutaneous Tissue, and Fascia Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1
MDC crossing · diagnoses (27977)
- 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
- MDC 08 — Diseases and Disorders of the Musculoskeletal System and Connective Tissue[MDC crossing]: “Diseases and Disorders of the Musculoskeletal System and Connective Tissue — 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 27972 more
Nearest codes
- 0NJ00ZZ — Inspection of Skull, Open Approach[One axis away]— CMS ICD-10-PCS tables
- 0NJ03ZZ — Inspection of Skull, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
- 0NJ0XZZ — Inspection of Skull, External Approach[One axis away]— CMS ICD-10-PCS tables
- 0NJB4ZZ — Inspection of Nasal Bone, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
- 0NJW4ZZ — Inspection of Facial Bone, Percutaneous Endoscopic Approach[One axis away]— CMS ICD-10-PCS tables
Change history
No changes recorded for this code. This ledger tracks additions, deletions and description changes from FY2026 (April) onward. Note changes are not tracked.
Read from: CMS ICD-10-PCS code tables, index and definitions — FY2026 (April); CMS MS-DRG Definitions Manual (incl. Appendix B diagnosis index, Appendix C CC/MCC list, Appendix E procedure index) and IPPS Final Rule tables — v43; AHRQ HCUP Clinical Classifications Software Refined for ICD-10-PCS Procedures (hcup-us.ahrq.gov/toolssoftware/ccsr/PRCCSR_v2026-1.zip) — v2026.1. All data sources · How to read the labels