Taber's Medical Dictionary
modifier
A code used in medical billing to indicate that a service provided was altered by an unusual circumstance that warrants additional payment for the service. The code typically consists of two digits or a number and a letter. Also known as a payment modifier or informational modifier.
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Citation
Venes, Donald, editor. "Modifier." Taber's Medical Dictionary, 25th ed., F.A. Davis Company, 2025. Taber's Online, www.tabers.com/tabersonline/view/Tabers-Dictionary/743276/0/modifier.
Modifier. In: Venes DD, ed. Taber's Medical Dictionary. F.A. Davis Company; 2025. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/743276/0/modifier. Accessed April 30, 2026.
Modifier. (2025). In Venes, D. (Ed.), Taber's Medical Dictionary (25th ed.). F.A. Davis Company. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/743276/0/modifier
Modifier [Internet]. In: Venes DD, editors. Taber's Medical Dictionary. F.A. Davis Company; 2025. [cited 2026 April 30]. Available from: https://www.tabers.com/tabersonline/view/Tabers-Dictionary/743276/0/modifier.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - modifier
ID - 743276
ED - Venes,Donald,
BT - Taber's Medical Dictionary
UR - https://www.tabers.com/tabersonline/view/Tabers-Dictionary/743276/0/modifier
PB - F.A. Davis Company
ET - 25
DB - Taber's Online
DP - Unbound Medicine
ER -