The 2nd character defines the particular body system or general physiological system or anatomical region involved.
|X2||New Technology||Cardiovascular System|
|XH||New Technology||Skin, Subcutaneous Tissue, Fascia and Breast|
|XK||New Technology||Muscles, Tendons, Bursae and Ligaments|
|XW||New Technology||Anatomical Regions|
Section X was created in response to public comments received regarding New Technology proposals presented at ICD-10 Coordination and Maintenance Committee Meetings, and general issues facing classification of new technology procedures.