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ICD-10-PCS 2027 procedure code

0C520ZZDestruction of Hard Palate, 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 0C520ZZ

0C520ZZ is the ICD-10-PCS code for a destruction procedure on the hard palate using an open approach. In ICD-10-PCS, destruction means physical eradication of all or a portion of a body part by the direct use of energy, force, or a destructive agent.

In plain terms, this corresponds to local excision or destruction of lesion or tissue of bony palate, the ICD-9-CM procedure title it maps to (27.31).

For a different body part, codes include 0C500ZZ (upper lip), 0C510ZZ (lower lip), 0C530ZZ (soft palate), 0C540ZZ (buccal mucosa), 0C550ZZ (upper gingiva), 0C560ZZ (lower gingiva) and 18 more.

The same procedure with a different approach is coded 0C523ZZ (percutaneous) and 0C52XZZ (external).

It is an operating-room procedure in the MS-DRG logic for DRG 137 (Mouth Procedures with CC/MCC) and DRG 138 (Mouth Procedures without CC/MCC), under the surgical category “Mouth Procedures”.

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
5Destruction

Physical eradication of all or a portion of a body part by the direct use of energy, force, or a destructive agent

None of the body part is physically taken out

Includes: Fulguration of rectal polyp, cautery of skin lesion

4. Body Part
2Hard Palate
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 →
  • 27.31Local excision or destruction of lesion or tissue of bony palateapproximate

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 0C520ZZ

Is 0C520ZZ a valid ICD-10-PCS code for 2027?

Yes. 0C520ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0C520ZZ an O.R. procedure?

Yes. 0C520ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0C520ZZ group to?

Depending on the principal diagnosis, 0C520ZZ can group to MS-DRG 137 and MS-DRG 138.

What is the ICD-9 procedure code for 0C520ZZ?

The CMS GEMs map 0C520ZZ to ICD-9-CM 27.31 (Local excision or destruction of lesion or tissue of bony palate).