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ICD-10-PCS 2027 procedure code

0CT00ZZResection of Upper Lip, 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 0CT00ZZ

0CT00ZZ is the ICD-10-PCS code for a resection procedure on the upper lip using an open approach. In ICD-10-PCS, resection means cutting out or off, without replacement, all of a body part.

In plain terms, this corresponds to other excision of mouth, the ICD-9-CM procedure title it maps to (27.49).

For a different body part, codes include 0CT10ZZ (lower lip), 0CT20ZZ (hard palate), 0CT30ZZ (soft palate), 0CT70ZZ (tongue), 0CT80ZZ (right parotid gland), 0CT90ZZ (left parotid gland) and 15 more.

The same procedure with a different approach is coded 0CT0XZZ (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 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC), DRG 909 (Other O.R. Procedures for Injuries without CC/MCC) and DRG 957 (Other O.R. Procedures for Multiple Significant Trauma with MCC), under the surgical categories “Mouth Procedures”, “Other O.R. Procedures for Injuries” and “Other O.R. Procedures for Multiple Significant Trauma”.

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
TResection

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

Includes: Total nephrectomy, total lobectomy of lung

4. Body Part
0Upper Lip

Includes: Frenulum labii superioris; Labial gland; Vermilion border

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

Different approach

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 →
  • 27.49Other excision of mouthapproximate

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 0CT00ZZ

Is 0CT00ZZ a valid ICD-10-PCS code for 2027?

Yes. 0CT00ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CT00ZZ an O.R. procedure?

Yes. 0CT00ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CT00ZZ group to?

Depending on the principal diagnosis, 0CT00ZZ can group to MS-DRG 137, MS-DRG 138, MS-DRG 907, MS-DRG 908, MS-DRG 909 and MS-DRG 957.

What is the ICD-9 procedure code for 0CT00ZZ?

The CMS GEMs map 0CT00ZZ to ICD-9-CM 27.49 (Other excision of mouth).