Skip to content
Dx

ICD-10-PCS 2027 procedure code

0CWY77ZRevision of Autologous Tissue Substitute in Mouth and Throat, Via Natural or Artificial Opening

✓ Valid for 2027O.R. procedure

Short description: Revision of Autol Sub in Mouth/Throat, Via Opening

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 0CWY77Z

0CWY77Z is the ICD-10-PCS code for a revision procedure on the mouth and throat using a via natural or artificial opening approach with autologous tissue substitute. In ICD-10-PCS, revision means correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device.

In plain terms, this corresponds to Pharyngotomy, the ICD-9-CM procedure title it maps to (29.0).

For a different body part, codes include 0CWS77Z (larynx).

The same procedure with a different approach is coded 0CWY07Z (open), 0CWY37Z (percutaneous), 0CWY87Z (via natural or artificial opening endoscopic) and 0CWYX7Z (external).

With a different device, use 0CWY70Z (drainage device), 0CWY71Z (radioactive element), 0CWY7DZ (intraluminal device), 0CWY7JZ (synthetic substitute), 0CWY7KZ (nonautologous tissue substitute) and 0CWY7YZ (other device).

It is an operating-room procedure in the MS-DRG logic for DRG 143 (Other Ear, Nose, Mouth and Throat O.R. Procedures with MCC), DRG 144 (Other Ear, Nose, Mouth and Throat O.R. Procedures with CC), DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), DRG 907 (Other O.R. Procedures for Injuries with MCC), DRG 908 (Other O.R. Procedures for Injuries with CC) and DRG 909 (Other O.R. Procedures for Injuries without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. 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
WRevision

Correcting, to the extent possible, a portion of a malfunctioning device or the position of a displaced device

Revision can include correcting a malfunctioning or displaced device by taking out or putting in components of the device such as a screw or pin

Includes: Adjustment of position of pacemaker lead, recementing of hip prosthesis

4. Body Part
YMouth and Throat
5. Approach
7Via Natural or Artificial Opening

Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure

6. Device
7Autologous Tissue Substitute

Includes: Autograft; Cultured epidermal cell autograft; Epicel(R) cultured epidermal autograft

7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different body part

MS-DRG v44.0 grouping

All DRGs →

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

ICD-9-CM equivalent

Converter →
  • 29.0Pharyngotomyapproximate

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 0CWY77Z

Is 0CWY77Z a valid ICD-10-PCS code for 2027?

Yes. 0CWY77Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CWY77Z an O.R. procedure?

Yes. 0CWY77Z is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CWY77Z group to?

Depending on the principal diagnosis, 0CWY77Z can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 907, MS-DRG 908 and MS-DRG 909.

What is the ICD-9 procedure code for 0CWY77Z?

The CMS GEMs map 0CWY77Z to ICD-9-CM 29.0 (Pharyngotomy).