CPT code categories, modifiers, and evaluation and management coding fundamentals for outpatient billing.
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- Who maintains the CPT code set?
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The American Medical Association (AMA)
- How many digits are in a standard CPT code?
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Five digits
- What are the three categories of CPT codes?
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Category I, Category II, and Category III
- What do Category I CPT codes describe?
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Procedures and services widely performed and consistent with current medical practice
- What do Category II CPT codes describe?
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Supplemental tracking codes used for performance measurement, not for billing
- What do Category III CPT codes describe?
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Temporary codes for emerging and experimental technology, services, and procedures
- What CPT code range is used for Evaluation and Management (E/M) services?
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99202 through 99499
- What CPT code range is used for Anesthesia services?
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00100 through 01999
- What CPT code range is used for Surgery?
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10004 through 69990
- What CPT code range is used for Radiology?
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70010 through 79999
- What CPT code range is used for Pathology and Laboratory?
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80047 through 89398
- What CPT code range is used for Medicine services?
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90281 through 99607
- What is a CPT modifier?
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A two-digit code appended to a CPT code to indicate a service was altered without changing its definition
- What does CPT modifier 50 indicate?
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A bilateral procedure performed on both sides of the body during the same session
- What does CPT modifier 51 indicate?
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Multiple procedures were performed during the same session by the same provider