Why HIM knowledge is important in playing role to be able to conduct quality-of-care reviews, knowledge of patient record and how to review documentation ?

Why HIM knowledge is important in playing role to be able to conduct quality-of-care reviews, knowledge of patient record and how to review documentation ?

500 words please. why HIM knowledge is important in playing role to be able to conduct quality-of-care reviews, knowledge of patient record and how to review documentation ??