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ICD-10-PCS 2027 procedure code

0CNS8ZZRelease Larynx, Via Natural or Artificial Opening Endoscopic

✓ 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 0CNS8ZZ

0CNS8ZZ is the ICD-10-PCS code for a release procedure on the larynx using a via natural or artificial opening 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 0CNM8ZZ (pharynx), 0CNR8ZZ (epiglottis), 0CNT8ZZ (right vocal cord) and 0CNV8ZZ (left vocal cord).

The same procedure with a different approach is coded 0CNS0ZZ (open), 0CNS3ZZ (percutaneous), 0CNS4ZZ (percutaneous endoscopic) and 0CNS7ZZ (via natural or artificial opening).

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
SLarynx

Includes: Aryepiglottic fold; Arytenoid cartilage; Corniculate cartilage; Cricoid cartilage; Cricothyroid membrane; Cuneiform cartilage; False vocal cord; Glottis; Rima glottidis; Thyroid cartilage; Ventricular fold

5. Approach
8Via Natural or Artificial Opening Endoscopic

Entry of instrumentation through a natural or artificial external opening 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 0CNS8ZZ

Is 0CNS8ZZ a valid ICD-10-PCS code for 2027?

Yes. 0CNS8ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CNS8ZZ an O.R. procedure?

Yes. 0CNS8ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CNS8ZZ group to?

Depending on the principal diagnosis, 0CNS8ZZ 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 0CNS8ZZ?

The CMS GEMs map 0CNS8ZZ to ICD-9-CM 31.92 (Lysis of adhesions of trachea or larynx).