ICD-10-PCS 2027 procedure code
6A550Z0Pheresis of Erythrocytes, Single
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 6A550Z0
6A550Z0 is the ICD-10-PCS code for a pheresis procedure on the circulatory using a single approach with no qualifier (qualifier: erythrocytes). In ICD-10-PCS, pheresis means extracorporeal separation of blood products.
In plain terms, this corresponds to therapeutic erythrocytapheresis, the ICD-9-CM procedure title it maps to (99.73).
The same procedure with a different approach is coded 6A551Z0 (multiple).
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
- 6Extracorporeal or Systemic Therapies
- 2. Body System
- APhysiological Systems
- 3. Operation
- 5Pheresis
Extracorporeal separation of blood products
- 4. Body System
- 5Circulatory
- 5. Duration
- 0Single
- 6. Qualifier
- ZNo Qualifier
- 7. Qualifier
- 0Erythrocytes
Other versions of this procedure
Different duration
ICD-9-CM equivalent
Converter →- 99.73Therapeutic erythrocytapheresisapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about 6A550Z0
Is 6A550Z0 a valid ICD-10-PCS code for 2027?
- Yes. 6A550Z0 is valid for inpatient procedures from October 1, 2026 through September 30, 2027.
What is the ICD-9 procedure code for 6A550Z0?
- The CMS GEMs map 6A550Z0 to ICD-9-CM 99.73 (Therapeutic erythrocytapheresis).