ICD-10-PCS 2027 procedure code
02NG4ZZRelease Mitral Valve, Percutaneous Endoscopic Approach
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 02NG4ZZ
02NG4ZZ is the ICD-10-PCS code for a release procedure on the mitral valve 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 closed heart valvotomy, mitral valve, the ICD-9-CM procedure title it maps to (35.02).
For a different body part, codes include 02N04ZZ (coronary artery, one artery), 02N14ZZ (coronary artery, two arteries), 02N24ZZ (coronary artery, three arteries), 02N34ZZ (coronary artery, four or more arteries), 02N44ZZ (coronary vein), 02N54ZZ (atrial septum) and 20 more.
The same procedure with a different approach is coded 02NG0ZZ (open) and 02NG3ZZ (percutaneous).
It is an operating-room procedure in the MS-DRG logic for DRG 270 (Other Major Cardiovascular Procedures with MCC), DRG 271 (Other Major Cardiovascular Procedures with CC) and DRG 272 (Other Major Cardiovascular Procedures without CC/MCC), under the surgical category “Other Major Cardiovascular 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
- 2Heart and Great Vessels
- 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
- GMitral Valve
Includes: Bicuspid valve; Left atrioventricular valve; Mitral annulus
- 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
Different body part
- 02N04ZZCoronary Artery, One Artery
- 02N14ZZCoronary Artery, Two Arteries
- 02N24ZZCoronary Artery, Three Arteries
- 02N34ZZCoronary Artery, Four or More Arteries
- 02N44ZZCoronary Vein
- 02N54ZZAtrial Septum
- 02N64ZZAtrium, Right
- 02N74ZZAtrium, Left
- 02N84ZZConduction Mechanism
- 02N94ZZChordae Tendineae
- 02ND4ZZPapillary Muscle
- 02NF4ZZAortic Valve
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 05 · Diseases and Disorders of the Circulatory System · Other Major Cardiovascular Procedures
ICD-9-CM equivalent
Converter →- 35.02Closed heart valvotomy, mitral valveapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 02NG4ZZ
Is 02NG4ZZ a valid ICD-10-PCS code for 2027?
- Yes. 02NG4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 02NG4ZZ an O.R. procedure?
- Yes. 02NG4ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 02NG4ZZ group to?
- Depending on the principal diagnosis, 02NG4ZZ can group to MS-DRG 270, MS-DRG 271 and MS-DRG 272.
What is the ICD-9 procedure code for 02NG4ZZ?
- The CMS GEMs map 02NG4ZZ to ICD-9-CM 35.02 (Closed heart valvotomy, mitral valve).