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ICD-10-PCS 2027 procedure code

0C550ZZDestruction of Upper Gingiva, Open Approach

✓ Valid for 2027

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 0C550ZZ

0C550ZZ is the ICD-10-PCS code for a destruction procedure on the upper gingiva 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 excision of lesion or tissue of gum, the ICD-9-CM procedure title it maps to (24.31).

For a different body part, codes include 0C500ZZ (upper lip), 0C510ZZ (lower lip), 0C520ZZ (hard palate), 0C530ZZ (soft palate), 0C540ZZ (buccal mucosa), 0C560ZZ (lower gingiva) and 18 more.

The same procedure with a different approach is coded 0C553ZZ (percutaneous) and 0C55XZZ (external).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

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
5Upper Gingiva
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

ICD-9-CM equivalent

Converter →
  • 24.31Excision of lesion or tissue of gumapproximate

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 0C550ZZ

Is 0C550ZZ a valid ICD-10-PCS code for 2027?

Yes. 0C550ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0C550ZZ?

The CMS GEMs map 0C550ZZ to ICD-9-CM 24.31 (Excision of lesion or tissue of gum).