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ICD-10-PCS 2027 procedure code

0CNV4ZZRelease Left Vocal Cord, Percutaneous Endoscopic 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 0CNV4ZZ

0CNV4ZZ is the ICD-10-PCS code for a release procedure on the left vocal cord using a percutaneous endoscopic approach. In ICD-10-PCS, release means freeing a body part from an abnormal physical constraint by cutting or by the use of force.

In plain terms, this corresponds to lysis of adhesions of trachea or larynx, the ICD-9-CM procedure title it maps to (31.92).

For a different body part, codes include 0CNM4ZZ (pharynx), 0CNR4ZZ (epiglottis), 0CNS4ZZ (larynx) and 0CNT4ZZ (right vocal cord).

The same procedure with a different approach is coded 0CNV0ZZ (open), 0CNV3ZZ (percutaneous), 0CNV7ZZ (via natural or artificial opening) and 0CNV8ZZ (via natural or artificial opening endoscopic).

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 166 (Other Respiratory System O.R. Procedures with MCC), DRG 167 (Other Respiratory System O.R. Procedures with CC) and DRG 168 (Other Respiratory System O.R. Procedures without CC/MCC), under the surgical categories “Other Ear, Nose, Mouth and Throat O.R. Procedures”, “Other Respiratory System O.R. Procedures”, “Other O.R. Procedures for Injuries” and 1 more.

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
NRelease

Freeing a body part from an abnormal physical constraint by cutting or by the use of force

Some of the restraining tissue may be taken out but none of the body part is taken out

Includes: Adhesiolysis, carpal tunnel release

4. Body Part
VVocal Cord, Left

Includes: Vocal fold

5. Approach
4Percutaneous Endoscopic

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach and visualize 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.

ICD-9-CM equivalent

Converter →
  • 31.92Lysis of adhesions of trachea or larynxapproximate

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 0CNV4ZZ

Is 0CNV4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0CNV4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CNV4ZZ an O.R. procedure?

Yes. 0CNV4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CNV4ZZ group to?

Depending on the principal diagnosis, 0CNV4ZZ can group to MS-DRG 143, MS-DRG 144, MS-DRG 145, MS-DRG 166, MS-DRG 167 and MS-DRG 168.

What is the ICD-9 procedure code for 0CNV4ZZ?

The CMS GEMs map 0CNV4ZZ to ICD-9-CM 31.92 (Lysis of adhesions of trachea or larynx).