0NPW40Z

Potential MS-DRG Relationships (FY2026)

The MS-DRG grouper treats this as an operating room procedure. It appears in the surgical logic of 6 MS-DRGs:

• MDC 03 — Other Ear, Nose, Mouth and Throat O.R. Procedures: DRG 143, DRG 144, DRG 145
• MDC 08 — Local Excision and Removal of Internal Fixation Devices Except Hip and Femur: DRG 495, DRG 496, DRG 497

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.

0NP040Z — Removal of Drainage Device from Skull, Percutaneous Endoscopic Approach, 0NPB40Z — Removal of Drainage Device from Nasal Bone, Percutaneous Endoscopic Approach

Same operation — other Approach

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

0NPW00Z — Removal of Drainage Device from Facial Bone, Open Approach, 0NPW30Z — Removal of Drainage Device from Facial Bone, Percutaneous Approach, 0NPWX0Z — Removal of Drainage Device from Facial Bone, External Approach

Same operation — other Device

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

0NPW44Z — Removal of Internal Fixation Device from Facial Bone, Percutaneous Endoscopic Approach, 0NPW45Z — Removal of External Fixation Device from Facial Bone, Percutaneous Endoscopic Approach, 0NPW47Z — Removal of Autologous Tissue Substitute from Facial Bone, Percutaneous Endoscopic Approach, 0NPW4JZ — Removal of Synthetic Substitute from Facial Bone, Percutaneous Endoscopic Approach, 0NPW4KZ — Removal of Nonautologous Tissue Substitute from Facial Bone, Percutaneous Endoscopic Approach, 0NPW4MZ — Removal of Bone Growth Stimulator from Facial Bone, Percutaneous Endoscopic Approach

Contextual Map

Every relationship of 0NPW40Z 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.

PCS table

• 0NP[PCS table]
• [object Object] — Section: [object Object] [Section]: “[object Object]”
• [object Object] — Body System: [object Object] [Body System]: “[object Object]”
• [object Object] — Operation: [object Object] [Operation]: “[object Object]”

MS-DRG participation

• 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)”
• 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)”
• 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)”
• DRG 495 — LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITH MCC [MS-DRG]: “LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITH MCC — Local Excision and Removal of Internal Fixation Devices Except Hip and Femur (MDC 08)”
• DRG 496 — LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITH CC [MS-DRG]: “LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITH CC — Local Excision and Removal of Internal Fixation Devices Except Hip and Femur (MDC 08)”
• DRG 497 — LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITHOUT CC/MCC [MS-DRG]: “LOCAL EXCISION AND REMOVAL OF INTERNAL FIXATION DEVICES EXCEPT HIP AND FEMUR WITHOUT CC/MCC — Local Excision and Removal of Internal Fixation Devices Except Hip and Femur (MDC 08)”

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.”
• 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.”
• 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.” · check together
• A36.0 — Pharyngeal diphtheria [Same-MDC diagnosis]: “Pharyngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.” · check together
• A36.1 — Nasopharyngeal diphtheria [Same-MDC diagnosis]: “Nasopharyngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.” · check together
• A36.2 — Laryngeal diphtheria [Same-MDC diagnosis]: “Laryngeal diphtheria — grouped in MDC 03, the diagnosis side of this code's crossing.” · check together
• A54.5 — Gonococcal pharyngitis [Same-MDC diagnosis]: “Gonococcal pharyngitis — grouped in MDC 03, the diagnosis side of this code's crossing.” · check together
• and 26780 more

Nearest codes

• 0NP040Z — Removal of Drainage Device from Skull, Percutaneous Endoscopic Approach [One axis away]
• 0NPB40Z — Removal of Drainage Device from Nasal Bone, Percutaneous Endoscopic Approach [One axis away]
• 0NPW00Z — Removal of Drainage Device from Facial Bone, Open Approach [One axis away]
• 0NPW30Z — Removal of Drainage Device from Facial Bone, Percutaneous Approach [One axis away]
• 0NPW44Z — Removal of Internal Fixation Device from Facial Bone, Percutaneous Endoscopic Approach [One axis away]
• 0NPW45Z — Removal of External Fixation Device from Facial Bone, Percutaneous Endoscopic Approach [One axis away]
• 0NPW47Z — Removal of Autologous Tissue Substitute from Facial Bone, Percutaneous Endoscopic Approach [One axis away]
• 0NPW4JZ — Removal of Synthetic Substitute from Facial Bone, Percutaneous Endoscopic Approach [One axis away]