Step 2. Diagnosis:

Select a Major Diagnosis from Component C - Cardiac

C.??.?.?

C refers to: Cardiac which may be described as: Cluster of elements that involve the heart and blood vessels.

Possible Sub-Diagnoses

Component Code Concept Definition
C 05.0 Cardiac Output Alteration Change in or modification of the pumping action of the heart or blood vessels
C 06.0 Cardiovascular Alteration Change in or modification of the heart or blood vessels