AMA CPT® Assistant - 2018 Issue 1 (January)

Surgery: Endocrine System (Q&A)

January 2018 page 7b Surgery: Endocrine System Question: Is water-deprivation testing reported with a laboratory testing code or with an evaluation and management (E/M) code? Answer: Water-deprivation testing is performed to ensure adequate dehydration and maximal stimulation of the antidiuretic hormone (ADH), which helps the kidneys manage the amount of water in the body. ADH testing (84588) is typically performed in patients with more chronic forms of diabetes insipidus (DI). The extent of deprivation is usually limited by the patient's thirst or by any significant drop in blood pressure or related clinical manifestation of dehydration. From a CPT coding...

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CPT® Assistant content is the official source for CPT® coding guidance. It is an instrumental tool when appealing insurance denials and validating coding to auditors. Monthly issues and an extensive archive provide comprehensive guidance on proper CPT® coding for past, present and upcoming code set releases. Archives date back to 1990 for historical use of codes, changes, rationales, coding tips and trends in the industry.

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