FIELD T-Z 

 Columns 58, 59, 60, and 61 



877 



8771 



878 



8781 

 418B 



87A 

 87B 



88 



881 

 882 

 883 



884 

 89 



891 



8911 



892 

 8A 



Hyperemia (active or passive); blood 

 congestion of specific body parts 

 (specify the body part in Field H-1), 

 except skin; use Symbol 8771 speci- 

 fically for blood congestion in skin. 



Flushing of skin; erythema; hyperemia 

 of skin. (Do not use Symbol 8771 for 

 the flash or temporary flushing of the 

 skin due to vasodilation and increased 

 blood flow, but only for actual blood 

 congestion of some longer duration. ) 



Ischemia; temporary blood deficiency, 

 chiefly due to local constriction of 

 blood vessels (name the body part in 

 Field H-1), except skin; use Symbol 

 8781 specifically for temporary blood 

 deficiency of the skin. For permanent 8A1 



blood deficiency (leading to infarction), 

 use Symbol 418B. 



Pallor due to drainage of blood from the 

 skin 



Obstruction of circulation (permanent 

 blood deficiency of a specific body 

 part), leading to necrosis of the affected 

 part; infarction; coagulation necrosis; 581 



thrombotic or embolic necrosis, 1172 



unspecified. 8A2 



Exudation 



Filtration of blood or lymph; selective 

 filtration and removal of specific blood 

 components or lymph components, 582 



unspecified 1173 



Normal chemical balance of protoplasm, 51 



cells, tissues, and body fluids, 

 unspecified SB 



PH 



Eh (oxidation-reduction potential) 8B1 



Alkaline reserve 



Acid-base balance 9 



Serum. (Note; The items listed under 

 Symbol 89 describe and are related to 

 serum and its components, their prop- 91 



erties, and their normal and abnormal 911 



states. Use symbols of the 8A-- 912 



series for coding the phenomena 93 



associated with specific serum compo- 

 nents involved in immunological 931 

 activity. ) 932 



Antibody production (except histamine- 933 



specific antibody production, Symbol 934 



8911) 94 



Histamine- specific antibody production. 95 



Use Symbol 8911 only with Symbol 1, 96 



2, or 3 (or 8, 9, A, or C) of Field T-1. 97 



Complement 



Immunity; immunological reactions (in- 971 



volving specific substances of the 972 



serum [as well as cells of the organism 98 



in general], whose production is coded 981 



by symbols of Series 89--), unspecified. 982 



Note: The general processes of an 

 organism's becoming more tolerant or 

 more sensitive to the test compound, 

 secondary compound, or other organisms 

 or of being sensitized are coded as 

 adaptive processes by symbols of the 

 5--- series (51--, 5C--, and 58). The 

 complex of reactions resulting from 

 administration of the test compound to 

 an organism made sensitive or sensi- 

 tized is generally mere suitably coded 

 with special symbols of the 115-, 116-, 

 or 117- series (e.g.. Symbol 1172). 

 Use Symbols of the 8A series only for 

 the reactions at the cellular/tissue 

 level. 



Anaphylaxis. Use Symbol 8A1 only for 

 the actual combination of anaphylactin- 

 anaphylactogen. Use Symbol 581 for 

 the particular sensitization process 

 stimulating anaphylactin production. 

 Use Symbol 1 172 for response to the 

 anaphylactin-anaphylactogen combi- 

 nation, anaphylactic shock . 



Anaphylactic sensitization 



Anaphylactic shock 



Allergic manifestations other than 

 anaphylaxis, unspecified. See the 

 notes accompanying Symbols 8A and 

 8A1. 



Photosensitization 



Photosensitive reaction 



Reduction of sensitivity. (See all sym- 

 bols of the 51-- series. ) 



Organelle function, unspecified. 

 (Function of special structure of a cell.) 



Trichocyst discharge; nematocyst 

 discharge 



Function (normal or abnormal) of nerve 

 tissue or of the nervous system, 

 unspecified 



Psychic state, unspecified 



Disorientation, confusion 



Hallucination; hallucinosis 



Excitation and transmission in nerve 

 tissue 



Threshold 



Accommodation, adaptation 



Refractory period of nerve 



Supernormal period 



Chronaxie 



Action potential and resting potential 



Brain wave 



Synaptic transmission, unspecified; 

 ganglionic transmission, unspecified 



Presynaptic transmission 



Postsynaptic transmission 



Neuromuscular transmission 



End-plate potential 



Muscle potential 



- 155 



