Which of the following statements about Category I CPT codes is true?

Category I CPT codes are indeed the most commonly used codes in medical practice. These codes are designed to represent a wide range of medical procedures and services that are performed by healthcare professionals. Each Category I code is associated with a specific procedure or service, which is well-defined, widely performed, and accepted within the medical community.

These codes are crucial for billing and documentation purposes, as they provide standardized nomenclature that facilitates communication among healthcare providers, insurers, and patients. The standardized nature of Category I codes helps ensure that healthcare services are accurately recorded and reimbursed.

In contrast, the other statements do not accurately describe Category I CPT codes. They are not limited to experimental procedures, nor do they represent non-existent services. Additionally, while some Category I codes may require modifiers to provide additional information about the service, not all of them do. This means that the statement about all requiring modifiers is not a characteristic of Category I codes.