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ICD-10-PCS 2027 procedure code

0CMW0Z1Reattachment of Upper Tooth, Multiple, 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 0CMW0Z1

0CMW0Z1 is the ICD-10-PCS code for a reattachment procedure on the upper tooth using an open approach (qualifier: multiple). In ICD-10-PCS, reattachment means putting back in or on all or a portion of a separated body part to its normal location or other suitable location.

In plain terms, this corresponds to implantation of tooth, the ICD-9-CM procedure title it maps to (23.5).

For a different body part, codes include 0CMX0Z1 (lower tooth).

The same procedure with a different approach is coded 0CMWXZ1 (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
MReattachment

Putting back in or on all or a portion of a separated body part to its normal location or other suitable location

Vascular circulation and nervous pathways may or may not be reestablished

Includes: Reattachment of hand, reattachment of avulsed kidney

4. Body Part
WUpper Tooth
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
1Multiple

Other versions of this procedure

Different body part

Different approach

Different qualifier

ICD-9-CM equivalent

Converter →
  • 23.5Implantation of toothapproximate

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 0CMW0Z1

Is 0CMW0Z1 a valid ICD-10-PCS code for 2027?

Yes. 0CMW0Z1 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0CMW0Z1?

The CMS GEMs map 0CMW0Z1 to ICD-9-CM 23.5 (Implantation of tooth).