0K940ZX ICD-10-PCS Code: Drainage of Tongue, Palate, Pharynx Muscle, Open Approach, Diagnostic
Drainage of Tongue/Palate/Phar Muscle, Open 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.
| Position | Value | Meaning |
|---|---|---|
| 1 | Section0 | Medical and Surgical |
| 2 | Body SystemK | Muscles |
| 3 | Root Operation9 | Drainage Taking or letting out fluids and/or gases from a body part |
| 4 | Body Part4 | Tongue, Palate, Pharynx Muscle |
| 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 12 MS-DRGs:
- MDC 01 — Peripheral, Cranial Nerve and Other Nervous System Procedures: DRG 040, DRG 041, DRG 042
- MDC 08 — Soft Tissue Procedures: DRG 500, DRG 501, DRG 502
- MDC 09 — Other Skin, Subcutaneous Tissue and Breast Procedures: DRG 579, DRG 580, DRG 581
- MDC 16 — Other O.R. Procedures of the Blood and Blood Forming Organs: DRG 802, DRG 803, DRG 804
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.
0K900ZX — Drainage of Head Muscle, Open Approach, Diagnostic, 0K910ZX — Drainage of Facial Muscle, Open Approach, Diagnostic, 0K920ZX — Drainage of Right Neck Muscle, Open Approach, Diagnostic, 0K930ZX — Drainage of Left Neck Muscle, Open Approach, Diagnostic, 0K950ZX — Drainage of Right Shoulder Muscle, Open Approach, Diagnostic, 0K960ZX — Drainage of Left Shoulder Muscle, Open Approach, Diagnostic, 0K970ZX — Drainage of Right Upper Arm Muscle, Open Approach, Diagnostic, 0K980ZX — Drainage of Left Upper Arm Muscle, Open Approach, Diagnostic, +19 more
Same operation — other Approach
Same table and root operation, differing only in the approach character.
0K943ZX — Drainage of Tongue, Palate, Pharynx Muscle, Percutaneous Approach, Diagnostic, 0K944ZX — Drainage of Tongue, Palate, Pharynx Muscle, Percutaneous Endoscopic Approach, Diagnostic
Same operation — other Qualifier
Same table and root operation, differing only in the qualifier character.
0K940ZZ — Drainage of Tongue, Palate, Pharynx Muscle, Open Approach
Same procedure category (CCSR), other tables
AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under ENT diagnostic procedures (non-endoscopic) (Ear, Nose, and Throat 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.
0CJS0ZZ — Inspection of Larynx, Open Approach, 0CJS3ZZ — Inspection of Larynx, Percutaneous Approach, 0CJS4ZZ — Inspection of Larynx, Percutaneous Endoscopic Approach, 0CJS7ZZ — Inspection of Larynx, Via Natural or Artificial Opening, 0CJSXZZ — Inspection of Larynx, External Approach, 0CJY0ZZ — Inspection of Mouth and Throat, Open Approach, 0CJY3ZZ — Inspection of Mouth and Throat, Percutaneous Approach, 0CJY4ZZ — Inspection of Mouth and Throat, Percutaneous Endoscopic Approach, 0CJY7ZZ — Inspection of Mouth and Throat, Via Natural or Artificial Opening, 0CJYXZZ — Inspection of Mouth and Throat, External Approach, 0KB40ZX — Excision of Tongue, Palate, Pharynx Muscle, Open Approach, Diagnostic, 0KB43ZX — Excision of Tongue, Palate, Pharynx Muscle, Percutaneous Approach, Diagnostic, 0KB44ZX — Excision of Tongue, Palate, Pharynx Muscle, Percutaneous Endoscopic Approach, Diagnostic, 0W900ZX — Drainage of Head, Open Approach, Diagnostic, 0W903ZX — Drainage of Head, Percutaneous Approach, Diagnostic, 0W904ZX — Drainage of Head, Percutaneous Endoscopic Approach, Diagnostic, 0W920ZX — Drainage of Face, Open Approach, Diagnostic, 0W923ZX — Drainage of Face, Percutaneous Approach, Diagnostic, 0W924ZX — Drainage of Face, Percutaneous Endoscopic Approach, Diagnostic, 0W930ZX — Drainage of Oral Cavity and Throat, Open Approach, Diagnostic, +435 more
Contextual Map
Every relationship of 0K940ZX 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 0K940ZX with these 5 related codes in Claim Check
PCS table
- 0K9[PCS table]— CMS ICD-10-PCS tables
- Medical and Surgical — Section: Medical and Surgical[Section]: “Medical and Surgical”— CMS ICD-10-PCS tables
- Muscles — Body System: Muscles[Body System]: “Muscles”— CMS ICD-10-PCS tables
- Drainage — Operation: Drainage[Operation]: “Drainage”— CMS ICD-10-PCS tables
MS-DRG participation (12)
- 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
- DRG 500 — SOFT TISSUE PROCEDURES WITH MCC[MS-DRG]: “SOFT TISSUE PROCEDURES WITH MCC — Soft Tissue Procedures (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 501 — SOFT TISSUE PROCEDURES WITH CC[MS-DRG]: “SOFT TISSUE PROCEDURES WITH CC — Soft Tissue Procedures (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 502 — SOFT TISSUE PROCEDURES WITHOUT CC/MCC[MS-DRG]: “SOFT TISSUE PROCEDURES WITHOUT CC/MCC — Soft Tissue Procedures (MDC 08)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 579 — OTHER SKIN, SUBCUTANEOUS TISSUE AND BREAST PROCEDURES WITH MCC[MS-DRG]: “OTHER SKIN, SUBCUTANEOUS TISSUE AND BREAST PROCEDURES WITH MCC — Other Skin, Subcutaneous Tissue and Breast Procedures (MDC 09)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- DRG 580 — OTHER SKIN, SUBCUTANEOUS TISSUE AND BREAST PROCEDURES WITH CC[MS-DRG]: “OTHER SKIN, SUBCUTANEOUS TISSUE AND BREAST PROCEDURES WITH CC — Other Skin, Subcutaneous Tissue and Breast Procedures (MDC 09)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
- and 4 more
Clinical classification (CCSR)
- ENT003 — ENT diagnostic procedures (non-endoscopic)[CCSR category]: “ENT diagnostic procedures (non-endoscopic) — Ear, Nose, and Throat Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1
MDC crossing · diagnoses (33418)
- 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 33413 more
Nearest codes
- 0K900ZX — Drainage of Head Muscle, Open Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K910ZX — Drainage of Facial Muscle, Open Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K920ZX — Drainage of Right Neck Muscle, Open Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K930ZX — Drainage of Left Neck Muscle, Open Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K940ZZ — Drainage of Tongue, Palate, Pharynx Muscle, Open Approach[One axis away]— CMS ICD-10-PCS tables
- 0K943ZX — Drainage of Tongue, Palate, Pharynx Muscle, Percutaneous Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K944ZX — Drainage of Tongue, Palate, Pharynx Muscle, Percutaneous Endoscopic Approach, Diagnostic[One axis away]— CMS ICD-10-PCS tables
- 0K950ZX — Drainage of Right Shoulder Muscle, Open Approach, Diagnostic[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