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ICD-10-PCS 2027 procedure code

4A007BDMeasurement of Intracranial Pressure, Via Natural or Artificial Opening

✓ Valid for 2027

Short description: Measurement of Intracranial Pressure, Via Opening

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 4A007BD

4A007BD is the ICD-10-PCS code for a measurement procedure on the central nervous using a via natural or artificial opening approach with pressure (qualifier: intracranial). 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 intracranial pressure monitoring, the ICD-9-CM procedure title it maps to (01.10).

The same procedure with a different approach is coded 4A003BD (percutaneous) and 4A008BD (via natural or artificial opening endoscopic).

With a different device, use 4A007KD (temperature) and 4A007RD (saturation).

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
0Central Nervous
5. Approach
7Via Natural or Artificial Opening

Entry of instrumentation through a natural or artificial external opening to reach the site of the procedure

6. Function / Device
BPressure
7. Qualifier
DIntracranial

Other versions of this procedure

Different function / device

ICD-9-CM equivalent

Converter →
  • 01.10Intracranial pressure 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 4A007BD

Is 4A007BD a valid ICD-10-PCS code for 2027?

Yes. 4A007BD is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 4A007BD?

The CMS GEMs map 4A007BD to ICD-9-CM 01.10 (Intracranial pressure monitoring).