What are cat 2 codes?

Cat 2 codes most commonly refer to Category II CPT codes in medical billing, which are optional tracking codes for performance measurement and quality of care, not for reimbursement. CPT stands for Current Procedural Terminology maintained by AMA. Category II codes are supplemental codes that begin with letter F and four digits, such as 2023F dilated eye exam or 3074F systolic blood pressure less than 130, and they describe clinical components typically included in evaluation and management, like vital signs, lab results, counseling, and follow-up. They are used for quality reporting programs like HEDIS, MIPS, and PQRS to track whether doctors follow evidence-based guidelines, for example documenting diabetic foot exam or blood pressure control, without requiring chart review. They do not generate payment themselves but can affect quality bonuses in value-based care. Cat 2 codes are optional, not required for billing. In other contexts, Cat 2 codes could mean Category 2 tractor hitch codes for implement compatibility, but in healthcare, Category II codes are well known. They differ from Category I codes which are standard procedure codes billed for payment, and Category III codes which are temporary codes for emerging technology. Hospitals use Cat 2 codes to measure performance, reduce abstraction burden, and support population health management, encouraging documentation of best practices.