The ICD10-PCS code set has a logical, consistent structure that follows a logical consistent process down to the individual character level. Individual letters and numbers, called “values,” are selected in sequence to occupy the seven spaces of the code, called “characters”.
ICD10 Procedure Codes is composed of 17 sections, represented by the numbers 0–9 and the letters B–D, F–H, and X. The broad procedure categories contained in these sections range from surgical procedures to substance abuse treatment and new technology.