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CPT® Modifier 9D
Deleted

Official Description

NAT2 (drug metabolism)

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Short Descr	NAT2 (drug metabolism)
Medium Descr	NAT2 (drug metabolism)

Modifiers

-/+ Deleted, Replaced, Expanded Codes

0A-9Z Genetic Testing Code Modifiers

9A-9L Metabolic-Pharmacogenetics

9A TPMT, commonly called (thiopurine methyltransferase) (patients on antimetabolite therapy)

9B CYP2 genes, commonly called cytochrome p450 (drug metabolism)

9C ABCB1, commonly called MDR1 or p-glycoprotein (drug transport)

9D NAT2 (drug metabolism)

9L Metabolic-pharmacogenetics, not otherwise specified

Date	Action	Notes
2013-01-01	Deleted	Removed from the CPT codebook.

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