The Physiological Systems body system is identified by the character “A” in the 2nd character position and grouped within the Extracorporeal or Systemic Therapies section of the ICD-10-PCS coding structure. The 2nd character of an ICD-10-PCS code defines the particular body system or general physiological system or anatomical region involved.
6 = Extracorporeal or Systemic Therapies
A- Physiological Systems
The 3rd character refers to the root operation or the objective of the procedure.
Extracorporeal control of atmospheric pressure and composition
Extracorporeal elimination of undissolved gas from body fluids
Extracorporeal treatment by electromagnetic rays
Extracorporeal raising of body temperature
Extracorporeal lowering of body temperature
Extracorporeal treatment by diffusion of therapeutic fluid
Extracorporeal separation of blood products
Extracorporeal treatment by light rays
Extracorporeal treatment by shock waves
Extracorporeal treatment by ultrasound
Extracorporeal treatment by ultraviolet light