Ending in F, optional performance measures are classified as __________ codes?

Optional performance measures are classified as Category II codes in the CPT coding system. These codes are used primarily for tracking and measuring performance in various healthcare services. Unlike Category I codes, which describe specific procedures and services, Category II codes are supplementary codes that provide data for the measurement of quality of care. They often end with the letter "F" and are utilized in a way that helps healthcare providers improve their practice and demonstrate effectiveness in patient care.

Category III codes, on the other hand, are reserved for temporary codes that are assigned to emerging technologies, services, and procedures that have not yet been broadly accepted or have not gone through the rigorous validation for a permanent code assignment. Category IV is not a recognized classification in the CPT coding system, and thus it's not applicable for performance measure classification.

This distinction is important because understanding the purpose and structure of these codes allows healthcare professionals to effectively use them for quality reporting and improving healthcare outcomes.