272.1 is hyperglyceridemia, I looked it up and posted the definition below. If he documeted HL which is hyperlipidemia abbreviated, I would feel comfortable using 272.4 = unspecified hyperlipidema, but I would not use 272.1 without verifying with the doctor that this is actually what the patient has.
hyperglyceridemia
[-glī′səridē′mē·ə]
Etymology: Gk, hyper, glykys + haima, blood
an excess of glycerides, particularly triglycerides, in the blood. It is caused by a congenital defect in the ability to metabolize the amino acid glycine.
Mosby's Medical Dictionary, 8th edition. © 2009, Elsevier.