CPT Knowledge Base - Jun 22, 2010
We understand that code 50590 is a unilateral code and if the physician is treating one kidney stone in the right kidney and one kidney stone in the left kidney, it would be appropriate to report 50590 for the first in the right kidney and 50590-50 (depending on the payer) to report the second kidney stone in the left kidney. However, if the physician treats two kidney stones in the same kidney would it be correct to submit code 50590 for the first stone and 50590-59 for the second stone? Or is code 50590 meant to be used for multiple kidney stones in the same kidney (during the same session)? ...
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Article Overview
This coding Q&A addresses how extracorporeal shock wave lithotripsy is reported when a provider treats kidney stones in one kidney, both kidneys, or multiple stones during the same session. It is intended for coding professionals who need guidance on procedure reporting, laterality, and related modifier use in a urology setting.
Why This Topic Matters
Accurate reporting for lithotripsy affects claim integrity and helps avoid overcounting procedures when treatment involves multiple stones or both kidneys.
What You Will Learn
- How the article frames reporting for a unilateral lithotripsy procedure
- How laterality and bilateral treatment are discussed in relation to procedure reporting
- How the article addresses multiple stones versus multiple treated sites within the same session
- What general modifier guidance is mentioned for this scenario
Who Should Read This
- Medical coders
- Coding auditors
- Revenue cycle staff
- Urology billing professionals
Codes Discussed
Modifiers Discussed
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