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ICD-10-PCS 2027 procedure code

0KNB4ZZRelease Left Lower Arm and Wrist Muscle, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Release Left Lower Arm and Wrist Muscle, Perc Endo 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 0KNB4ZZ

0KNB4ZZ is the ICD-10-PCS code for a release procedure on the left lower arm and wrist 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 0KN04ZZ (head muscle), 0KN14ZZ (facial muscle), 0KN24ZZ (right neck muscle), 0KN34ZZ (left neck muscle), 0KN44ZZ (tongue, palate, pharynx muscle), 0KN54ZZ (right shoulder muscle) and 21 more.

The same procedure with a different approach is coded 0KNB0ZZ (open), 0KNB3ZZ (percutaneous) and 0KNBXZZ (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
BLower Arm and Wrist Muscle, Left

Includes: Anatomical snuffbox; Anconeus muscle; Brachioradialis muscle; Extensor carpi radialis muscle; Extensor carpi ulnaris muscle; Flexor carpi radialis muscle; Flexor carpi ulnaris muscle; Flexor pollicis longus muscle; Palmaris longus muscle; Pronator quadratus muscle; Pronator teres 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

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

  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 0KNB4ZZ

Is 0KNB4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0KNB4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0KNB4ZZ an O.R. procedure?

Yes. 0KNB4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0KNB4ZZ group to?

Depending on the principal diagnosis, 0KNB4ZZ can group to MS-DRG 500, MS-DRG 501 and MS-DRG 502.

What is the ICD-9 procedure code for 0KNB4ZZ?

The CMS GEMs map 0KNB4ZZ to ICD-9-CM 83.91 (Lysis of adhesions of muscle, tendon, fascia, and bursa).