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ICD-10-PCS 2027 procedure code

0CC40ZZExtirpation of Matter from Buccal Mucosa, Open Approach

✓ Valid for 2027O.R. procedure

Code unchanged since ICD-10-PCS took effect on October 1, 2015. Source: official FY2027 ICD-10-PCS release from CMS. Page updated September 29, 2026. About our data

About 0CC40ZZ

0CC40ZZ is the ICD-10-PCS code for a extirpation procedure on the buccal mucosa using an open approach. In ICD-10-PCS, extirpation means taking or cutting out solid matter from a body part.

In plain terms, this corresponds to incision of mouth, unspecified structure, the ICD-9-CM procedure title it maps to (27.92).

For a different body part, codes include 0CC00ZZ (upper lip), 0CC10ZZ (lower lip), 0CC20ZZ (hard palate), 0CC30ZZ (soft palate), 0CC50ZZ (upper gingiva), 0CC60ZZ (lower gingiva) and 18 more.

The same procedure with a different approach is coded 0CC43ZZ (percutaneous) and 0CC4XZZ (external).

It is an operating-room procedure in the MS-DRG logic for DRG 137 (Mouth Procedures with CC/MCC), DRG 138 (Mouth Procedures without CC/MCC), DRG 579 (Other Skin, Subcutaneous Tissue and Breast Procedures with MCC), DRG 580 (Other Skin, Subcutaneous Tissue and Breast Procedures with CC), DRG 581 (Other Skin, Subcutaneous Tissue and Breast Procedures without CC/MCC) and DRG 907 (Other O.R. Procedures for Injuries with MCC), under the surgical categories “Mouth Procedures”, “Other Skin, Subcutaneous Tissue and Breast Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

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
CMouth and Throat
3. Operation
CExtirpation

Taking or cutting out solid matter from a body part

The solid matter may be an abnormal byproduct of a biological function or a foreign body; it may be imbedded in a body part or in the lumen of a tubular body part. The solid matter may or may not have been previously broken into pieces

Includes: Thrombectomy, choledocholithotomy

4. Body Part
4Buccal Mucosa

Includes: Buccal gland; Molar gland; Palatine gland

5. Approach
0Open

Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

MS-DRG v44.0 grouping

All DRGs →

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

MDC 03 · Diseases and Disorders of the Ear, Nose, Mouth and Throat · Mouth Procedures

ICD-9-CM equivalent

Converter →
  • 27.92Incision of mouth, unspecified structureapproximate

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)
  • No changes since FY2016.

Common questions about 0CC40ZZ

Is 0CC40ZZ a valid ICD-10-PCS code for 2027?

Yes. 0CC40ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CC40ZZ an O.R. procedure?

Yes. 0CC40ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CC40ZZ group to?

Depending on the principal diagnosis, 0CC40ZZ can group to MS-DRG 137, MS-DRG 138, MS-DRG 579, MS-DRG 580, MS-DRG 581 and MS-DRG 907.

What is the ICD-9 procedure code for 0CC40ZZ?

The CMS GEMs map 0CC40ZZ to ICD-9-CM 27.92 (Incision of mouth, unspecified structure).