Question:

I am looking for guidance on reporting codes 94644 and 94645. Specifically, can 94645 be assigned with 94644?

Answer:

As indicated in the parenthetical note following 94644, if the service is performed for less than one hour, code 94640 is reported. For a total treatment time of less than one hour, neither code 94644 nor 94645 is reported. Code 94640 describes a treatment administered several times a day at short intervals (e.g., 10 minutes), whereas continuous inhalation treatment (94644, 94645) is administered for longer periods and then discontinued. The continuous administration also encompasses a higher dosage of medication, and different equipment is used.

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