0K930ZZ ICD-10-PCS Code: Drainage of Left Neck Muscle, Open 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 12 MS-DRGs:

• MDC 03 — Other Ear, Nose, Mouth and Throat O.R. Procedures: DRG 143, DRG 144, DRG 145
• 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 21 — Other O.R. Procedures for Injuries: DRG 907, DRG 908, DRG 909

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.

0K900ZZ — Drainage of Head Muscle, Open Approach, 0K910ZZ — Drainage of Facial Muscle, Open Approach, 0K920ZZ — Drainage of Right Neck Muscle, Open Approach, 0K940ZZ — Drainage of Tongue, Palate, Pharynx Muscle, Open Approach, 0K950ZZ — Drainage of Right Shoulder Muscle, Open Approach, 0K960ZZ — Drainage of Left Shoulder Muscle, Open Approach, 0K970ZZ — Drainage of Right Upper Arm Muscle, Open Approach, 0K980ZZ — Drainage of Left Upper Arm Muscle, Open Approach, +19 more

Same operation — other Approach

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

0K933ZZ — Drainage of Left Neck Muscle, Percutaneous Approach, 0K934ZZ — Drainage of Left Neck Muscle, Percutaneous Endoscopic Approach

Same operation — other Device

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

0K9300Z — Drainage of Left Neck Muscle with Drainage Device, Open Approach

Same operation — other Qualifier

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

0K930ZX — Drainage of Left Neck Muscle, Open Approach, Diagnostic

Same procedure category (CCSR), other tables

AHRQ's Clinical Classifications Software Refined groups these ICD-10-PCS procedures with this one under Incision and drainage of musculoskeletal tissue and joints (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.

+1769 more

Contextual Map

Every relationship of 0K930ZZ 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 0K930ZZ 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 143 — OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITH MCC[MS-DRG]: “OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITH MCC — Other Ear, Nose, Mouth and Throat O.R. Procedures (MDC 03)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 144 — OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITH CC[MS-DRG]: “OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITH CC — Other Ear, Nose, Mouth and Throat O.R. Procedures (MDC 03)”— CMS MS-DRG Definitions Manual (Appendix E) · FY2026
• DRG 145 — OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITHOUT CC/MCC[MS-DRG]: “OTHER EAR, NOSE, MOUTH AND THROAT O.R. PROCEDURES WITHOUT CC/MCC — Other Ear, Nose, Mouth and Throat O.R. Procedures (MDC 03)”— 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)

• MST004 — Incision and drainage of musculoskeletal tissue and joints[CCSR category]: “Incision and drainage of musculoskeletal tissue and joints — Musculoskeletal, Subcutaneous Tissue, and Fascia Procedures”— AHRQ CCSR for ICD-10-PCS Procedures (HCUP) · v2026.1

MDC crossing · diagnoses (32226)

• 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 32221 more

Nearest codes

• 0K900ZZ — Drainage of Head Muscle, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 0K910ZZ — Drainage of Facial Muscle, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 0K920ZZ — Drainage of Right Neck Muscle, Open Approach[One axis away]— CMS ICD-10-PCS tables
• 0K9300Z — Drainage of Left Neck Muscle with Drainage Device, Open Approach[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
• 0K933ZZ — Drainage of Left Neck Muscle, Percutaneous Approach[One axis away]— CMS ICD-10-PCS tables
• 0K934ZZ — Drainage of Left Neck Muscle, Percutaneous Endoscopic Approach[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