Enlargement of lymph nodes. 1  Short description: Enlargement lymph nodes. 2  ICD-9-CM 785.6 is a billable medical code that can be used to indicate a diagnosis on a reimbursement claim, however, 785.6 should only be used for claims with a date of service on or before September 30, 2015.
Definition of hyperchromic effect. 1) an. increase in absorption intensity; if structural modification. leads to an increase in the molar extinction coefficient for a particular. chromophoric group it is said to have brought about a hyperchromic. effect.ncrease in absorption intensity; if structural modification. leads to an increase in the molar extinction coefficient for a particular. chromophoric group it is said to have brought about a hyperchromic. effect.
Hyperchromicity is the increase of absorbance (optical density) of a material. The most famous example is the hyperchromicity of DNA that occurs when the DNA duplex is denatured. The UV absorption is increased when the two single DNA strands are being separated, either by heat or by addition of denaturant or by increasing the pH level.