Wiki icd 9

with the info given and not knowing if venous or arterial the following are codes you may consider:

459.9 unspecified circulatory system disorder
459.81 venous (peripheral) insufficiency, unspecified
443.9 peripheral vascular disease, unspecified
 
Given the lack of details about which vessels are in question, I would lean towards 785.9 since it is more of a symptom code and includes weak pulses.
 
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