Please clarify the proper quantity of units to report for code 77338 , Multi-leaf collimator (MLC) device(s) for intensity modulated radiation therapy (IMRT), design and construction per IMRT plan, for outpatient hospital facility billing in terms of the number of devices designed and constructed. The reporting of code 77338 once per IMRT plan, regardless of the number of devices constructed, may be appropriate for the physician service, however, is it appropriate for hospitals to report code 77338 only once? Previously, if nine custom devices were created, hospitals reported code 77334 , Treatment devices, design and construction; complex (irregular blocks, special shields, compensators, wedges, molds or casts), with nine units. The Medicare Ambulatory Payment Classification (APC) value for code 77338 is the same as the APC value for code 77334 , which can be billed with multiple units. CPT Changes: An Insiders View 2010, gives an example with the construction of nine custom MLC devices, but it does not code the scenario with a quantity (ie, units = 1 or units = 9) for the facility setting. ...
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Article Overview
This article focuses on a coding clarification for radiation oncology billing, centered on how a single planning service is reported when multiple treatment devices are associated with an IMRT plan. It is relevant to hospital outpatient billing staff, physician coders, and revenue cycle teams that need to understand how the service is treated across sites of service and how related APC context is discussed.
Why This Topic Matters
Correct unit reporting affects claim accuracy and consistency between physician and facility billing workflows. The article also places the question in the context of Medicare APC structure and prior CPT coding guidance, making it useful for coders who handle IMRT-related claims.
What You Will Learn
- How the article frames the unit-reporting question for a radiation oncology planning code
- How outpatient hospital billing is discussed in relation to physician reporting
- How APC context and prior CPT guidance are referenced in the clarification
- What broad billing scenario the article is trying to resolve
Who Should Read This
- Hospital outpatient coders
- Physician practice coders
- Radiation oncology billing staff
- Revenue cycle professionals
- Coding auditors
Codes Discussed
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