<status value="active" /> <experimental value="false" /> <description value="Stenosis of the Mid/Distal Left Anterior Descending Artery" /> <caseSensitive value="false" /> <content value="complete" /> <count value="5" /> <concept> <code value="G" /> <display value="70% to 99%" /> <definition value="Significant flow-limiting stenosis (≥70% occlusion) of the native mid/distal LAD artery is documented in the current coronary angiogram." /> </concept> <concept> <code value="W" /> <display value="100% without Chronic Total Occlusion" /> <definition value="100% stenosis of the native mid/distal LAD artery with thrombolysis in myocardial infarction (TIMI) antegrade flow grade 0 is documented in the current coronary angiogram." /> </concept> <concept> <code value="C" /> <display value="100% with Chronic Total Occlusion" /> <definition value="100% stenosis of the native mid/distal LAD artery with TIMI antegrade flow grade 0, with angiographically proven or estimated duration ≥3 months based on perfusion scanning or symptoms is documented in the current coronary angiogram." /> </concept> <concept> <code value="Z" /> <display value="100% Chronic Total Occlusion Unknown" /> <definition value="100% stenosis of the native mid/distal LAD artery with TIMI antegrade flow grade 0 of unknown duration is documented in the current coronary angiogram." /> </concept> <concept> <code value="L" /> <display value="<70%" /> <definition value="Non-significant flow-limiting stenosis (<70% occlusion) or no stenosis of the native mid/distal LAD artery is documented in the current coronary angiogram." /> </concept> </CodeSystem>