CPT Knowledgebase - Jun 10, 2009

Regarding code 50080, Percutaneous nephrostolithotomy or pyelostolithotomy, with or without dilation, endoscopy, lithotripsy, stenting, or basket extraction; up to 2 cm, does "up to 2 cm" include a stone measuring 2 cm or only up to 2 cm (ie, 1.99 cm)? Is the measurement of one stone or multiple stones making up the diameter of greater than or less than 2 cm? If a stone measures 1.8 mm & 0.8 mm, do you add that together to be greater than 2.0?

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