Refer to the ICD-10-CM Official Guidelines I.C.10.b.1 which…
Refer to the ICD-10-CM Official Guidelines I.C.10.b.1 which states: A code from subcategory _________blank, Acute respiratory failure, or subcategory _________blank, Acute and chronic respiratory failure, may be assigned as a principal 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.