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ICD-10-PCS 2027 procedure code

4A0ZX6ZMeasurement of Metabolism, 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 4A0ZX6Z

4A0ZX6Z is the ICD-10-PCS code for a measurement procedure on the none using an external approach with metabolism. In ICD-10-PCS, measurement means determining the level of a physiological or physical function at a point in time.

In plain terms, this corresponds to other nonoperative measurements and examinations, the ICD-9-CM procedure title it maps to (89.39).

The same procedure with a different approach is coded 4A0Z76Z (via natural or artificial opening).

With a different device, use 4A0ZXKZ (temperature) and 4A0ZXQZ (sleep).

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
4Measurement and Monitoring
2. Body System
APhysiological Systems
3. Operation
0Measurement

Determining the level of a physiological or physical function at a point in time

4. Body System
ZNone
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. Function / Device
6Metabolism
7. Qualifier
ZNo Qualifier

Other versions of this procedure

Different function / device

ICD-9-CM equivalent

Converter →
  • 89.39Other nonoperative measurements and examinationsapproximate

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 4A0ZX6Z

Is 4A0ZX6Z a valid ICD-10-PCS code for 2027?

Yes. 4A0ZX6Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4A0ZX6Z?

The CMS GEMs map 4A0ZX6Z to ICD-9-CM 89.39 (Other nonoperative measurements and examinations).