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Description
References suggest it as a tetrasubstituted variant of the shortest functional GHRH sequence, denoted GRF (1-29)

Some payers might expect to see modifier 59 when billing additional levels with CPT 64484, but only because they consider it a distinct procedure

Gao Y, Zhang W, Zeng LQ, Bai H, Li J, Zhou J, Zhou GY, Fang CW, Wang F, Qin XJ

During this visit, the physician administers a 0.5 mL dose of nirsevimab (sold under the brand name Beyfortus) and provides detailed information on RSV, its prevention, and the importance

Diabetologia 48, 17761783