<Li> M - codes (example: M0064): Medical Services </Li> <Li> P - codes (example: P2028): Pathology and Laboratory </Li> <Li> Q - codes (example: Q0035): Temporary Codes </Li> <Li> R - codes (example: R0070): Diagnostic Radiology Services </Li>

Which of the following letters is in use in the hcpcs tabular list