Browse Disease Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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7  Diseases of the Circulatory System
451-459   Diseases of Veins and Lymphatics, and Other Diseases of Circulatory System
459   Other disorders of circulatory system
459.9   Unspecified circulatory system disorder
   Diseases of the Respiratory System
   Use additional code to identify infectious organism
   Acute Respiratory Infections
Excludes:    pneumonia and influenza (480.0-487.8)