ICD-10-PCS 2027 procedure code
0KNJ0ZZRelease Left Thorax Muscle, Open 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 0KNJ0ZZ
0KNJ0ZZ is the ICD-10-PCS code for a release procedure on the left thorax muscle using an open 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 muscle, tendon, fascia, and bursa, the ICD-9-CM procedure title it maps to (83.91).
For a different body part, codes include 0KN00ZZ (head muscle), 0KN10ZZ (facial muscle), 0KN20ZZ (right neck muscle), 0KN30ZZ (left neck muscle), 0KN40ZZ (tongue, palate, pharynx muscle), 0KN50ZZ (right shoulder muscle) and 21 more.
The same procedure with a different approach is coded 0KNJ3ZZ (percutaneous), 0KNJ4ZZ (percutaneous endoscopic) and 0KNJXZZ (external).
It is an operating-room procedure in the MS-DRG logic for DRG 500 (Soft Tissue Procedures with MCC), DRG 501 (Soft Tissue Procedures with CC) and DRG 502 (Soft Tissue Procedures without CC/MCC), under the surgical category “Soft Tissue 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
- KMuscles
- 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
- JThorax Muscle, Left
Includes: Intercostal muscle; Levatores costarum muscle; Pectoralis major muscle; Pectoralis minor muscle; Serratus anterior muscle; Subclavius muscle; Subcostal muscle; Transverse thoracis muscle
- 5. Approach
- 0Open
Cutting through the skin or mucous membrane and any other body layers necessary to expose the site of the procedure
- 6. Device
- ZNo Device
- 7. Qualifier
- ZNo Qualifier
Other versions of this procedure
Different body part
- 0KN00ZZHead Muscle
- 0KN10ZZFacial Muscle
- 0KN20ZZNeck Muscle, Right
- 0KN30ZZNeck Muscle, Left
- 0KN40ZZTongue, Palate, Pharynx Muscle
- 0KN50ZZShoulder Muscle, Right
- 0KN60ZZShoulder Muscle, Left
- 0KN70ZZUpper Arm Muscle, Right
- 0KN80ZZUpper Arm Muscle, Left
- 0KN90ZZLower Arm and Wrist Muscle, Right
- 0KNB0ZZLower Arm and Wrist Muscle, Left
- 0KNC0ZZHand Muscle, Right
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 08 · Diseases and Disorders of the Musculoskeletal System and Connective Tissue · Soft Tissue Procedures
ICD-9-CM equivalent
Converter →- 83.91Lysis of adhesions of muscle, tendon, fascia, and bursaapproximate
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 0KNJ0ZZ
Is 0KNJ0ZZ a valid ICD-10-PCS code for 2027?
- Yes. 0KNJ0ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 0KNJ0ZZ an O.R. procedure?
- Yes. 0KNJ0ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 0KNJ0ZZ group to?
- Depending on the principal diagnosis, 0KNJ0ZZ can group to MS-DRG 500, MS-DRG 501 and MS-DRG 502.
What is the ICD-9 procedure code for 0KNJ0ZZ?
- The CMS GEMs map 0KNJ0ZZ to ICD-9-CM 83.91 (Lysis of adhesions of muscle, tendon, fascia, and bursa).