ICD-10-PCS code structure

Section:
  5 = Extracorporeal or Systemic Assistance and Performance

Body System:
  A = Physiological Systems

Root Operation:


See Terms used in Extracorporeal or Systemic Assistance and Performance

The 4th character refers to the body part or body region.

Restoration

Returning, or attempting to return, a physiological function to its original state by extracorporeal means.