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ICD-10-PCS 2027 procedure code

0KN0XZZRelease Head Muscle, External Approach

✓ Valid for 2027

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 0KN0XZZ

0KN0XZZ is the ICD-10-PCS code for a release procedure on the head muscle using an external 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 Stretching of muscle or tendon, the ICD-9-CM procedure title it maps to (93.27).

For a different body part, codes include 0KN1XZZ (facial muscle), 0KN2XZZ (right neck muscle), 0KN3XZZ (left neck muscle), 0KN4XZZ (tongue, palate, pharynx muscle), 0KN5XZZ (right shoulder muscle), 0KN6XZZ (left shoulder muscle) and 21 more.

The same procedure with a different approach is coded 0KN00ZZ (open), 0KN03ZZ (percutaneous) and 0KN04ZZ (percutaneous endoscopic).

It doesn't appear in the MS-DRG procedure index, so on its own it doesn't change the DRG assignment.

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
XExternal

Procedures performed directly on the skin or mucous membrane and procedures performed indirectly by the application of external force through the skin or mucous membrane

6. Device
ZNo Device
7. Qualifier
ZNo Qualifier

Other versions of this procedure

ICD-9-CM equivalent

Converter →
  • 93.27Stretching of muscle or tendonapproximate

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 0KN0XZZ

Is 0KN0XZZ a valid ICD-10-PCS code for 2027?

Yes. 0KN0XZZ is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 0KN0XZZ?

The CMS GEMs map 0KN0XZZ to ICD-9-CM 93.27 (Stretching of muscle or tendon).