Colonoscopy billing can be very complex, hinging on distinctions between screening and diagnostic intent. A single ICD-10 code, CPT selection or missing modifier can shift a procedure from fully ...
Modifier -33 is attached to the lab CPT code for the cholesterol screening. ICD-9 code V77.91 (screening for lipoid disorders) is coded as an additional diagnosis. Modifier -33 is not required on ...
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