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Inpatient Procedure Code

0N964ZX ICD-10-PCS Code: Drainage of Left Temporal Bone, Percutaneous Endoscopic Approach, Diagnostic

Drainage of Left Temporal Bone, Perc Endo Approach, Diagn

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.

PositionValueMeaning
1
Section0

Medical and Surgical

2
Body SystemN

Head and Facial Bones

3
Root Operation9

Drainage

Taking or letting out fluids and/or gases from a body part

4
Body Part6

Temporal Bone, Left

5
Approach4

Percutaneous Endoscopic

6
DeviceZ

No Device

7
QualifierX

Diagnostic

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 11 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 10 — Other Endocrine, Nutritional and Metabolic O.R. Procedures: DRG 628, DRG 629, DRG 630

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.

0N914ZX — Drainage of Frontal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N934ZX — Drainage of Right Parietal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N944ZX — Drainage of Left Parietal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N954ZX — Drainage of Right Temporal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N974ZX — Drainage of Occipital Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N9B4ZX — Drainage of Nasal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N9C4ZX — Drainage of Sphenoid Bone, Percutaneous Endoscopic Approach, Diagnostic, 0N9F4ZX — Drainage of Right Ethmoid Bone, Percutaneous Endoscopic Approach, Diagnostic, +14 more

Same operation — other Approach

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

0N960ZX — Drainage of Left Temporal Bone, Open Approach, Diagnostic, 0N963ZX — Drainage of Left Temporal Bone, Percutaneous Approach, Diagnostic

Same operation — other Qualifier

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

0N964ZZ — Drainage of Left Temporal Bone, 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 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.

0NB00ZX — Excision of Skull, Open Approach, Diagnostic, 0NB03ZX — Excision of Skull, Percutaneous Approach, Diagnostic, 0NB04ZX — Excision of Skull, Percutaneous Endoscopic Approach, Diagnostic, 0NB10ZX — Excision of Frontal Bone, Open Approach, Diagnostic, 0NB13ZX — Excision of Frontal Bone, Percutaneous Approach, Diagnostic, 0NB14ZX — Excision of Frontal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0NB30ZX — Excision of Right Parietal Bone, Open Approach, Diagnostic, 0NB33ZX — Excision of Right Parietal Bone, Percutaneous Approach, Diagnostic, 0NB34ZX — Excision of Right Parietal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0NB40ZX — Excision of Left Parietal Bone, Open Approach, Diagnostic, 0NB43ZX — Excision of Left Parietal Bone, Percutaneous Approach, Diagnostic, 0NB44ZX — Excision of Left Parietal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0NB50ZX — Excision of Right Temporal Bone, Open Approach, Diagnostic, 0NB53ZX — Excision of Right Temporal Bone, Percutaneous Approach, Diagnostic, 0NB54ZX — Excision of Right Temporal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0NB60ZX — Excision of Left Temporal Bone, Open Approach, Diagnostic, 0NB63ZX — Excision of Left Temporal Bone, Percutaneous Approach, Diagnostic, 0NB64ZX — Excision of Left Temporal Bone, Percutaneous Endoscopic Approach, Diagnostic, 0NB70ZX — Excision of Occipital Bone, Open Approach, Diagnostic, 0NB73ZX — Excision of Occipital Bone, Percutaneous Approach, Diagnostic, +840 more

Contextual Map

Every relationship of 0N964ZX 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 0N964ZX with these 5 related codes in Claim Check

PCS table

MS-DRG participation (11)

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

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