If someone could put this ICD-10-CM guideline in terms that just about anyone could understand it would be greatly appreciated?

1) Acute respiratory failure as principle diagnosis

A code from subcategory J96.0, Acute respiratory failure, or subcategory J96.

2) Acute and chronic respiratory failure, may be assigned as a principle diagnosis when it is the condition established after study to be chiefly responsible for occasioning the admission to the hospital, and the selection is supported by the Alphabetic Index and Tabular List.

However, chapter-specific coding guidelines (such as obstetrics, poisoning, HIV, newborn) that provide sequencing direction take precedence.