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ICD-10-PCS 2027 procedure code

F15Z18ZBithermal, Monaural Caloric Irrigation Assessment using Vestibular / Balance Equipment

✓ Valid for 2027

Short description: Bitherm Monaur Caloric Irrig Assess w Vestib/Balance Equip

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 F15Z18Z

F15Z18Z is the ICD-10-PCS code for a vestibular assessment procedure on the none using a bithermal, monaural caloric irrigation approach with vestibular / balance (qualifier: none). In ICD-10-PCS, vestibular assessment means measurement of the vestibular system and related functions.

In plain terms, this corresponds to clinical vestibular function tests, the ICD-9-CM procedure title it maps to (95.44).

The same procedure with a different approach is coded F15Z08Z (bithermal, binaural caloric irrigation), F15Z28Z (unithermal binaural screen), F15Z38Z (oscillating tracking), F15Z48Z (sinusoidal vertical axis rotational), F15Z58Z (dix-hallpike dynamic) and F15Z68Z (computerized dynamic posturography).

With a different device, use F15Z1ZZ (none).

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
FPhysical Rehabilitation and Diagnostic Audiology
2. Section Qualifier
1Diagnostic Audiology
3. Type
5Vestibular Assessment

Measurement of the vestibular system and related functions

4. Body System / Region
ZNone
5. Type Qualifier
1Bithermal, Monaural Caloric Irrigation

Measures the rhythmic eye movements stimulated by changing the temperature of the vestibular system in one ear

6. Equipment
8Vestibular / Balance
7. Qualifier
ZNone

Other versions of this procedure

Different equipment

ICD-9-CM equivalent

Converter →
  • 95.44Clinical vestibular function testsapproximate

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 F15Z18Z

Is F15Z18Z a valid ICD-10-PCS code for 2027?

Yes. F15Z18Z is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for F15Z18Z?

The CMS GEMs map F15Z18Z to ICD-9-CM 95.44 (Clinical vestibular function tests).