If a urine drug screen is performed at 9am (coded with CPT code 80301 ) and it is repeated later in the day with a new specimen due to change in patient status is it appropriate to code 80301 with modifier 91. Since the CPT code states per date of service I wanted to have this clarified. ...
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Article Overview
This brief coding Q&A addresses a repeat clinical diagnostic laboratory test scenario involving a urine drug screen and a same-day second specimen. It is aimed at coding professionals who need general guidance on when a repeat-test modifier is relevant in CPT laboratory reporting and how same-day duplicate testing is distinguished from other repeat-testing situations.
Why This Topic Matters
Same-day laboratory repeats can affect how claims are reported and whether a repeat-test modifier is appended. Understanding the article helps coders recognize the broad circumstances in which repeat laboratory testing is discussed under CPT rules.
What You Will Learn
- How repeat clinical diagnostic laboratory testing is discussed in same-day scenarios
- The general purpose of the repeat-test modifier in laboratory reporting
- How the article frames repeated testing versus other types of repeated or confirmatory testing
- The relationship between same-day laboratory services and CPT reporting context
Who Should Read This
- Medical coders
- Billing staff
- Compliance teams
- Laboratory coding professionals
Codes Discussed
Modifiers Discussed
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