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ICD-10-PCS Body System: ICD-10-PCS Body System XX - Physiological Systems

The ICD-10-PCS root operation Physiological Systems (XX) covers procedures related to assessing or supporting the functions of body systems. Classified under New Technology, this operation focuses on technologies that monitor, assist, or measure physiological functions.

Specifically, Monitoring (code XX2) involves repeatedly determining the level of a physiological or physical function over time, such as continuous heart rhythm tracking. Assistance (code XXA) describes taking over part of a bodily function using extracorporeal methods—for example, mechanical circulatory support devices. Lastly, Measurement (code XXE) refers to determining the level of a physiological function at a specific moment, like a one-time oxygen saturation test. These distinctions allow precise documentation of advanced procedures to assess or support physiological systems in clinical practice using the ICD-10-PCS Physiological Systems codes.

List of ICD-10-PCS procedures under ICD-10-PCS Body System XX - Physiological Systems

  • XX2 - Monitoring - Determining the level of a physiological or physical function repetitively over a periodof time

  • XXA - Assistance - Taking over a portion of a physiological function by extracorporeal means

  • XXE - Measurement - Determining the level of a physiological or physical function at a point in time