Without that modifier, most payer systems will bundle one service into the other and pay only one
doi:10.1111/dom.13979 Frias JP, Davies MJ, Rosenstock J, et al

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This makes it uniquely effective for: Visceral fat reduction (glucagon is specifically active on abdominal fat stores) Resting metabolic rate increase (glucagon is thermogenic it raises your metabolic baseline) Food noise suppression (GLP-1 component dampens reward-driven eating) Satiety signaling (GIP + GLP-1 extend fullness after meals) Because of this third mechanism, the clinical trial results for Retatrutide are notably better than other approved GLP-1s for body weight reduction