FIELD E ; Pathology Code 

 Columns 18, 19, 20, 21, 

 22, 23, 24, and 25 



Symbols 3, C, L, and T 



Trauma and physical agents as causes of 

 disease. 



3 Traumas 



C Heat, cold, radiation, etc. 



L Substances which cause physical injury rather 



than damage by chemical interaction 



31 Trauma, unspecified 



32 Operative wound 



CI Cold, freezing, frostbite 



C2 Contact burn 



C3 Sunburn, ultraviolet ray burn 



C4 X-rays, radium, other radio- 

 active substances, unspecified 



LI Foreign substances, 

 irritants, etc. 



Symbols 4, D, M, and U 



Disturbances of circulation as causes of pathology, 

 regardless of the primary cause of the circulatory 

 disturbance. 



4 Blood supply and blood pressure 



D Abnormality of blood components, character 



41 Increased blood supply, due 



to dilation of vascular bed 



42 Stasis 



43 Increased blood pressure 



44 Thrombosis, disruption of 



circulation to the part 



Symbols 5, E, N, and V 



Disturbances of the nervous system as causes of 

 disease, regardless of the primary cause of the 

 nervous disorder. 



5 Psychic disturbances 



E Reflex disturbances 



Nl- Efferent nerve disorders 

 NI 



NJ- Sensory nerve disorders 

 NZ 



V Sympathetic or parasympathetic disturbances 



NI Disturbance of myoneural junction 



84 



