Hyperlipidemia is an umbrella term for a group of acquired or genetic disorders characterized by elevated concentrations of lipids and/or lipoproteins — including LDL cholesterol, total cholesterol, triglycerides, and phospholipids — circulating in the bloodstream. It represents a subset of the broader category dyslipidemia and a superset of hypercholesterolemia. Because lipids do not dissolve in blood, excess amounts can deposit in arterial walls, driving atherosclerosis and significantly increasing the risk of heart attack, stroke, and peripheral artery disease. Hyperlipidemia is usually chronic and most patients require ongoing pharmacologic management combined with lifestyle modification.
Combined hyperlipidemia — elevated both LDL and triglycerides with decreased HDL; the most common inherited lipid disorder
Familial hypercholesterolemia (FH) — genetic form caused by LDL receptor mutations
Fredrickson classification — phenotypic typing system (Types I-V) used to categorize hyperlipoproteinemias
CODING CORNER
ICD-10-CM Codes
All hyperlipidemia codes live in category E78 - Disorders of lipoprotein metabolism and other lipidemias. Note: E78 codes are complete as listed (no 7th character required for metabolic disorder codes).
Encounter for screening for lipoid disorders (lipid panel screening)
🩺 Coder tip (inpatient profee hat on!): Per UHDDS guidelines, hyperlipidemia should be coded as a secondary/comorbid diagnosis when it is managed or affects patient care during the encounter. Always assign the most specific E78 subcategory supported by documentation — don’t default to E78.5 if the provider documented “familial hypercholesterolemia” or “hypertriglyceridemia.” Query if needed!
CPT Codes
These are the most commonly associated CPT codes for diagnosis and monitoring:
E/M office visit for ongoing hyperlipidemia management (level depends on MDM)
Treatment pharmacologic agents relevant to coding documentation include statins (first-line for LDL reduction), fibrates (triglyceride-focused), PCSK9 inhibitors (reserved for resistant/familial cases), and omega-3 supplements.