Answer: P29.12
The icd-10-cm code use to report for an 18 day-old infant who develops neonatal bradycardia is P29.12. This icd-10-cm code rules indicate that it should be used on the newborn record and not as maternal record.
In addition, the P29 code emphasized that the cardiovascular disorder originate in the perinatal period, which is grouped within a diagnostic related group.