Question 75833 75825 75822 venography documentation denial in Cath lab

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Hi everyone,

I started working as a medical coder for a cath lab that performs interventional radiology procedures like atherectomy, stent placement diagnostic catheterization. Most commonly used CPT codes are
76937
99152
99153
37252
37253
75833-59
75825-59
75822-59
37238
37239

United Healthcare reviewed those claims and denied venography and IVUS CPT by saying that documentation is not sufficient so is there any one who can guide me what is the true documentation requirement for these procedure,
37252
37253
75833-59
75825-59
75822-59

Thank you in anticipation!
 
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