Modifier 53 is used on CPT codes to reflect services that have been terminated. That implies that it should be used to CPTs that indicate diagnostic treatments or surgical services that the practitioner has completed. Modifier 53 is only applicable to professional physician services and does not relevant to ASC treatments. The operation is typically stopped due to unexpected extraordinary factors that might threaten the patient’s well-being if the treatment were to be done.
Now, modification 53 is similar to modifier 52 for reduced services, but please keep in mind that the two are very different in terms of how they should be utilized correctly.
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