In CRS types 1 and 2, the primary organ dysfunction is cardiac, which results in decline in renal function. CRS1 denotes acute heart failure, and CRS2 involves chronic heart failure. CRS types 3 and 4 refer to acute and chronic primary renal dysfunction resulting in heart failure. Type 5 CRS is distinct from all of these, in which an acute or chronic systemic disorder (such as sepsis) results in both renal and cardiac dysfunction.
I13.10 – Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
445236007 – Cardiorenal syndrome
Differential Diagnosis & Pitfalls