Coronary atherosclerosis due to lipid rich plaque

This code identifies coronary artery disease specifically caused by the accumulation of lipid-rich plaque within the coronary arteries. This type of plaque is characterized by a large necrotic core and a thin fibrous cap, making it particularly prone to rupture and subsequent thrombus formation. It represents a significant risk factor for acute coronary syndromes.

Apply this code when documentation explicitly states coronary atherosclerosis is due to or associated with lipid-rich plaque. This diagnosis is often made through advanced imaging techniques like intravascular ultrasound (IVUS) or optical coherence tomography (OCT), or inferred from clinical presentation and risk factors. Use when the physician's assessment directly links the coronary artery disease to this specific plaque morphology.

• Requires physician documentation explicitly stating "lipid-rich plaque" as the cause of coronary atherosclerosis.
• Do not use for general atherosclerosis without specific mention of lipid-rich plaque.
• Sequence as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis when it contributes to the patient's overall condition.