ICD10-PCS Terms for Extracorporeal or Systemic Assistance and Performance section

In extracorporeal assistance and performance procedures, equipment outside the body is used to assist or perform a physiological function. Extracorporeal assistance and performance procedure codes have a first character value of "5". The second character value for body system is physiological systems.

Assistance

Taking over a portion of a physiological function by extracorporeal means

Performance

Completely taking over a physiological function by extracorporeal means

Restoration

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