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ICD-10-PCS 2027 procedure code

0KNT4ZZRelease Left Lower Leg Muscle, Percutaneous Endoscopic Approach

✓ Valid for 2027O.R. procedure

Short description: Release Left Lower Leg 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 0KNT4ZZ

0KNT4ZZ is the ICD-10-PCS code for a release procedure on the left lower leg 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 0KNT0ZZ (open), 0KNT3ZZ (percutaneous) and 0KNTXZZ (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
TLower Leg Muscle, Left

Includes: Extensor digitorum longus muscle; Extensor hallucis longus muscle; Fibularis brevis muscle; Fibularis longus muscle; Flexor digitorum longus muscle; Flexor hallucis longus muscle; Gastrocnemius muscle; Peroneus brevis muscle; Peroneus longus muscle; Plantaris muscle; Popliteus muscle; Soleus muscle; Tibialis anterior muscle; Tibialis posterior 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 0KNT4ZZ

Is 0KNT4ZZ a valid ICD-10-PCS code for 2027?

Yes. 0KNT4ZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

Is 0KNT4ZZ an O.R. procedure?

Yes. 0KNT4ZZ is an O.R. procedure in MS-DRG v44.0.

What DRG does 0KNT4ZZ group to?

Depending on the principal diagnosis, 0KNT4ZZ can group to MS-DRG 500, MS-DRG 501 and MS-DRG 502.

What is the ICD-9 procedure code for 0KNT4ZZ?

The CMS GEMs map 0KNT4ZZ to ICD-9-CM 83.91 (Lysis of adhesions of muscle, tendon, fascia, and bursa).