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ICD-10-PCS 2027 procedure code

0CNM8ZZRelease Pharynx, Via Natural or Artificial Opening Endoscopic

✓ Valid for 2027O.R. procedure

Short description: Release Pharynx, Endo

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 0CNM8ZZ

0CNM8ZZ is the ICD-10-PCS code for a release procedure on the pharynx 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 pharyngeal adhesions, the ICD-9-CM procedure title it maps to (29.54).

For a different body part, codes include 0CNR8ZZ (epiglottis), 0CNS8ZZ (larynx), 0CNT8ZZ (right vocal cord) and 0CNV8ZZ (left vocal cord).

The same procedure with a different approach is coded 0CNM0ZZ (open), 0CNM3ZZ (percutaneous), 0CNM4ZZ (percutaneous endoscopic) and 0CNM7ZZ (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) and DRG 145 (Other Ear, Nose, Mouth and Throat O.R. Procedures without CC/MCC), under the surgical category “Other Ear, Nose, Mouth and Throat O.R. Procedures”.

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
MPharynx

Includes: Base of Tongue; Hypopharynx; Laryngopharynx; Lingual tonsil; Oropharynx; Piriform recess (sinus); Tongue, base of

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 →
  • 29.54Lysis of pharyngeal adhesionsapproximate

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 0CNM8ZZ

Is 0CNM8ZZ a valid ICD-10-PCS code for 2027?

Yes. 0CNM8ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0CNM8ZZ an O.R. procedure?

Yes. 0CNM8ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0CNM8ZZ group to?

Depending on the principal diagnosis, 0CNM8ZZ can group to MS-DRG 143, MS-DRG 144 and MS-DRG 145.

What is the ICD-9 procedure code for 0CNM8ZZ?

The CMS GEMs map 0CNM8ZZ to ICD-9-CM 29.54 (Lysis of pharyngeal adhesions).