In the Placement section of ICD-10-PCS, there are two values for the second character, W and Y

You are the first to arrive on the scene of a collapse of a balcony at an apartment building. You are met by a man whose arm is nearly severed, and you can see exposed bone and muscle tissue. Bleeding seems to be minimal. What is your next course of action?

A) This is a life-threating injury, so treat it immediately and call for additional resources. B) This is an "open incident," so using START he is a "green" patient. Have him sit in a safe area, apply a basic dressing to control bleeding, and, if possible, find someone to monitor him. Perform the scene size-up and triage. C) This is a "closed incident." Perform a scene size-up and treat this patient. Any other incoming units can continue treating people as they are found. D) Take him to the ambulance.

Which of the following describes neoplastic cells that are undergoing malignant changes confined to the original epithelium site without invading surrounding tissues?

A) benign neoplasms B) carcinoma in situ C) neoplasms of uncertain behavior D) neoplasms of unspecified nature