ICD-10-PCS 2027 procedure code
0KN04ZZRelease Head Muscle, 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 0KN04ZZ
0KN04ZZ is the ICD-10-PCS code for a release procedure on the head muscle 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 muscle, tendon, fascia, and bursa, the ICD-9-CM procedure title it maps to (83.91).
For a different body part, codes include 0KN14ZZ (facial muscle), 0KN24ZZ (right neck muscle), 0KN34ZZ (left neck muscle), 0KN44ZZ (tongue, palate, pharynx muscle), 0KN54ZZ (right shoulder muscle), 0KN64ZZ (left shoulder muscle) and 21 more.
The same procedure with a different approach is coded 0KN00ZZ (open), 0KN03ZZ (percutaneous) and 0KN0XZZ (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
- 0Head Muscle
Includes: Auricularis muscle; Masseter muscle; Pterygoid muscle; Splenius capitis muscle; Temporalis muscle; Temporoparietalis muscle
- 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
- 0KN14ZZFacial Muscle
- 0KN24ZZNeck Muscle, Right
- 0KN34ZZNeck Muscle, Left
- 0KN44ZZTongue, Palate, Pharynx Muscle
- 0KN54ZZShoulder Muscle, Right
- 0KN64ZZShoulder Muscle, Left
- 0KN74ZZUpper Arm Muscle, Right
- 0KN84ZZUpper Arm Muscle, Left
- 0KN94ZZLower Arm and Wrist Muscle, Right
- 0KNB4ZZLower Arm and Wrist Muscle, Left
- 0KNC4ZZHand Muscle, Right
- 0KND4ZZHand Muscle, Left
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 0KN04ZZ
Is 0KN04ZZ a valid ICD-10-PCS code for 2027?
- Yes. 0KN04ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
Is 0KN04ZZ an O.R. procedure?
- Yes. 0KN04ZZ is an O.R. procedure in MS-DRG v44.0.
What DRG does 0KN04ZZ group to?
- Depending on the principal diagnosis, 0KN04ZZ can group to MS-DRG 500, MS-DRG 501 and MS-DRG 502.
What is the ICD-9 procedure code for 0KN04ZZ?
- The CMS GEMs map 0KN04ZZ to ICD-9-CM 83.91 (Lysis of adhesions of muscle, tendon, fascia, and bursa).