CPT not clear
Well ... CPT tries to identify the actual age ranges that each of the codes applies to, but actually defining the terms ... no so much.
I'm using CPT 2009 Expert edition ... page 34, under guidelines for Inpatient Neonatal and Pediatric Critical Care
2nd paragraph you have the phrase - critically ill neonate or infant 28 days of age or less. (emphasis added by FTB)
4th paragraph, 3d line, you have the phrase - infant or young child from 29 days of..through 5 years... (emphasis added by FTB)
SAME paragraph, last sentence - child older than 5 years (emphasis added by FTB)
NOW ... go to the actual codes 99468-99476 on page 35.
99468 and 99469 read - critically ill neonate, 28 days of age or less (emphasis added by FTB)
99471 and 99472 read - infant or young child, 29 days through 24 months of age (emphasis added by FTB)
99475 and 99476 read - infant or young child, 2 through 5 years of age (emphasis added by FTB)
Not sure you can get a definitive answer to your question from this mishmash of terms.
F Tessa Bartels, CPC, CEMC