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ICD-10-PCS 2027 procedure code

4A033R1Measurement of Arterial Saturation, Peripheral, Percutaneous Approach

✓ Valid for 2027

Short description: Measure of Arterial Saturation, Peripheral, Perc 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 4A033R1

4A033R1 is the ICD-10-PCS code for a measurement procedure on the arterial using a percutaneous approach with saturation (qualifier: peripheral). 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 continuous intra-arterial blood gas monitoring, the ICD-9-CM procedure title it maps to (89.60).

For a different body part, codes include 4A043R1 (venous).

The same procedure with a different approach is coded 4A030R1 (open) and 4A03XR1 (external).

With a different device, use 4A03351 (flow), 4A033B1 (pressure), 4A033H1 (sound) and 4A033J1 (pulse).

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
3Arterial
5. Approach
3Percutaneous

Entry, by puncture or minor incision, of instrumentation through the skin or mucous membrane and any other body layers necessary to reach the site of the procedure

6. Function / Device
RSaturation
7. Qualifier
1Peripheral

Other versions of this procedure

Different body system

Different approach

ICD-9-CM equivalent

Converter →
  • 89.60Continuous intra-arterial blood gas monitoringapproximate

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 4A033R1

Is 4A033R1 a valid ICD-10-PCS code for 2027?

Yes. 4A033R1 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4A033R1?

The CMS GEMs map 4A033R1 to ICD-9-CM 89.60 (Continuous intra-arterial blood gas monitoring).