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Inpatient Procedure Code

0N9V0ZX ICD-10-PCS Code: Drainage of Left Mandible, Open Approach, Diagnostic

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 PartV

Mandible, Left

5
Approach0

Open

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 6 MS-DRGs:

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.

0N9L0ZX — Drainage of Left Palatine Bone, Open Approach, Diagnostic, 0N9M0ZX — Drainage of Right Zygomatic Bone, Open Approach, Diagnostic, 0N9N0ZX — Drainage of Left Zygomatic Bone, Open Approach, Diagnostic, 0N9P0ZX — Drainage of Right Orbit, Open Approach, Diagnostic, 0N9Q0ZX — Drainage of Left Orbit, Open Approach, Diagnostic, 0N9R0ZX — Drainage of Maxilla, Open Approach, Diagnostic, 0N9T0ZX — Drainage of Right Mandible, Open Approach, Diagnostic, 0N9X0ZX — Drainage of Hyoid Bone, Open Approach, Diagnostic, +14 more

Same operation — other Approach

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

0N9V3ZX — Drainage of Left Mandible, Percutaneous Approach, Diagnostic, 0N9V4ZX — Drainage of Left Mandible, Percutaneous Endoscopic Approach, Diagnostic

Same operation — other Qualifier

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

0N9V0ZZ — Drainage of Left Mandible, Open 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 0N9V0ZX 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 0N9V0ZX with these 5 related codes in Claim Check

PCS table

MS-DRG participation

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 (26785)

  • MDC 03 — Diseases and Disorders of the Ear, Nose, Mouth and Throat[MDC crossing]: “Diseases and Disorders of the Ear, Nose, Mouth and Throat — 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
  • A18.6 — Tuberculosis of (inner) (middle) ear[Same-MDC diagnosis]: “Tuberculosis of (inner) (middle) ear — grouped in MDC 03, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
  • A36.0 — Pharyngeal diphtheria[Same-MDC diagnosis]: “Pharyngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
  • A36.1 — Nasopharyngeal diphtheria[Same-MDC diagnosis]: “Nasopharyngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
  • A36.2 — Laryngeal diphtheria[Same-MDC diagnosis]: “Laryngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
  • A54.5 — Gonococcal pharyngitis[Same-MDC diagnosis]: “Gonococcal pharyngitis — grouped in MDC 03, the diagnosis side of this code's crossing.”— CMS MS-DRG Definitions Manual (Appendix B) · FY2026
  • and 26780 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