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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15  Certain Conditions Originating in the Perinatal Period
764-779   Other Conditions Originating in the Perinatal Period
765   Disorders relating to short gestation and low birthweight
765.0   Extreme immaturity
Note:    Usually implies a birthweight of less than 1,000 grams.
   Use additional code for weeks of gestation (765.20-765.29)