Final answer:
Standardization is the term that means a HIM professional consistently applies rules, ensuring uniform procedures in health information management.
Step-by-step explanation:
The term that means the HIM (Health Information Management) professional applies rules consistently is standardization. In the context of health information management, standardization is a critical concept wherein all procedures, from the administration and scoring to the interpretation of results, are carried out in a consistent and uniform manner. This ensures accuracy, reliability, and validity in the handling of health information, which is imperative for maintaining a high standard of care and for making informed decisions in the healthcare field.