I want to make sure I understand your question...
You are billing 117XX cpt codes with group 3 icd10 codes without a Q modifier? The group 3 icd10 codes represent those diagnoses where the patient has evidence of vascular impairment, for which the class findings modifiers are required. So, without the Q modifier you will get denied. The podiatrist must document either 1 class A, or 2 class B, or 1 B and 2 C class findings to be able to add the Q modifier to the claim. Without the documentation, the Q modifier cannot be added and without it, the claim will not get paid.
If your question was instead, that you ARE adding the Q modifier and still getting denied...it's likely because you are using an icd10 code in group 2 or 3 with an asterisk, which means you have to add the name and npi of the primary care doctor that is treating the condition and the approximate date the patient saw that doctor.
Also, the link for the LCD you referenced goes to one that has been replaced. I attached the current one.