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


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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