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ICD-10-PCS 2027 procedure code

5A05121Extracorporeal Hyperbaric Oxygenation, Intermittent

✓ 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 5A05121

5A05121 is the ICD-10-PCS code for a assistance procedure on the circulatory using an intermittent approach with oxygenation (qualifier: hyperbaric). In ICD-10-PCS, assistance means taking over a portion of a physiological function by extracorporeal means.

In plain terms, this corresponds to other immobilization, pressure, and attention to wound and Hyperbaric oxygenation, the ICD-9-CM procedure titles it maps to (93.59 and 93.95).

The same procedure with a different approach is coded 5A05221 (continuous).

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
5Extracorporeal or Systemic Assistance and Performance
2. Body System
APhysiological Systems
3. Operation
0Assistance

Taking over a portion of a physiological function by extracorporeal means

4. Body System
5Circulatory
5. Duration
1Intermittent
6. Function
2Oxygenation
7. Qualifier
1Hyperbaric

Other versions of this procedure

Different duration

ICD-9-CM equivalent

Converter →
  • 93.59Other immobilization, pressure, and attention to woundapproximate
  • 93.95Hyperbaric oxygenationapproximate

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 5A05121

Is 5A05121 a valid ICD-10-PCS code for 2027?

Yes. 5A05121 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.

What is the ICD-9 procedure code for 5A05121?

The CMS GEMs map 5A05121 to ICD-9-CM 93.59 (Other immobilization, pressure, and attention to wound) and 93.95 (Hyperbaric oxygenation).