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ICD-10-PCS 2027 procedure code

0NBC4ZXExcision of Sphenoid Bone, Percutaneous Endoscopic Approach, Diagnostic

✓ Valid for 2027O.R. procedure

Short description: Excision of Sphenoid Bone, Perc Endo Approach, Diagn

Code last changed in FY2018 (effective October 1, 2017). Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0NBC4ZX

0NBC4ZX is the ICD-10-PCS code for a excision procedure on the sphenoid bone using a percutaneous endoscopic approach (qualifier: diagnostic). In ICD-10-PCS, excision means cutting out or off, without replacement, a portion of a body part.

In plain terms, this corresponds to biopsy of facial bone, the ICD-9-CM procedure title it maps to (76.11).

For a different body part, codes include 0NB04ZX (skull), 0NB14ZX (frontal bone), 0NB34ZX (right parietal bone), 0NB44ZX (left parietal bone), 0NB54ZX (right temporal bone), 0NB64ZX (left temporal bone) and 16 more.

The same procedure with a different approach is coded 0NBC0ZX (open) and 0NBC3ZX (percutaneous).

It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC), DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), DRG 477 (Biopsies of Musculoskeletal System and Connective Tissue with MCC or Insertion of Antibiotic-eluting Bone Void Filler), DRG 478 (Biopsies of Musculoskeletal System and Connective Tissue with CC) and DRG 479 (Biopsies of Musculoskeletal System and Connective Tissue without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures” and “Biopsies of Musculoskeletal System and Connective Tissue”.

It has been valid since ICD-10-PCS took effect on October 1, 2015.

What each character means

1. Section
0Medical and Surgical
2. Body System
NHead and Facial Bones
3. Operation
BExcision

Cutting out or off, without replacement, a portion of a body part

The qualifier DIAGNOSTIC is used to identify excision procedures that are biopsies

Includes: Partial nephrectomy, liver biopsy

4. Body Part
CSphenoid Bone

Includes: Greater wing; Lesser wing; Optic foramen; Pterygoid process; Sella turcica

5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize the site of the procedure

6. Device
ZNo Device
7. Qualifier
XDiagnostic

Other versions of this procedure

Different qualifier

MS-DRG v44.0 grouping

All DRGs →

Surgical MS-DRGs this procedure can group to, depending on the principal diagnosis's MDC.

ICD-9-CM equivalent

Converter →
  • 76.11Biopsy of facial boneapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • FY2018 (effective 10/1/2017): Title revised — was “Excision of Right Sphenoid Bone, Percutaneous Endoscopic Approach, Diagnostic”

Common questions about 0NBC4ZX

Is 0NBC4ZX a valid ICD-10-PCS code for 2027?

Yes. 0NBC4ZX is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0NBC4ZX an O.R. procedure?

Yes. 0NBC4ZX is an O.R. procedure in MS-DRG v44.0.

What DRG does 0NBC4ZX group to?

Depending on the principal diagnosis, 0NBC4ZX can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 477, MS-DRG 478 and MS-DRG 479.

What is the ICD-9 procedure code for 0NBC4ZX?

The CMS GEMs map 0NBC4ZX to ICD-9-CM 76.11 (Biopsy of facial bone).