That is what medicine is. When it is documented with some dicease name, we better not ignore.
For some diseases asymptomic are also significant; one among them is Mitral Regurgitation.
Mitral valve regurgitation otherwise known as M. insufficiency is the abnormal leaking of blood thro ( a back flow), the mitral valve, from the left ventricle into the left atrium of the heart.
The degree of severity of MI can be quantified by the percentage of the left vent stroke volume that regurgitates into the left atrium (ie the regurgitation fraction.)
The terms classified are such as: mild, moderate ,mod to severe, severe .( I haven’t heard of TRACE; may be the mild. So far not classified so).
The regurgitant fraction and the associated signs of hemodynamic compromise are the determinants for treatment modalities. This is apart- be it symptomatic or asymptomatic
However, any abnormality- trace or mild (20% RF) , moderate(20-40%RF) , mod-severe(40-60%RF) or severe (more than 60% RF) is a mitral lesion and not acceptable to ignore; so also for coding
As for my opinion, trace should be placed at mild variety but not as normal.
ICD -9 394.1 ( rhematic), 424.0-non rheumatic), 746.6-congenital).
Well as you said, you better would wait for some expert to place their opinion. Thank you