P74.3Disturbances of potassium balance of newborn

P74.3 is the ICD-10-CM diagnosis code for disturbances of potassium balance of newborn. It belongs to category P74 (other transitory neonatal electrolyte and metabolic disturbances), block P70-P74 (transitory endocrine and metabolic disorders specific to newborn) and chapter 16 (certain conditions originating in the perinatal period). It is a header code, so it can't be reported by itself; one of its 2 subcodes must be used instead.

Within P74 (other transitory neonatal electrolyte and metabolic disturbances), P74.3 is specifically for disturbances of potassium balance of newborn. Related codes cover late metabolic acidosis of newborn (P74.0), Dehydration of newborn (P74.1), disturbances of sodium balance of newborn (P74.2), other transitory electrolyte disturbances of newborn (P74.4), transitory tyrosinemia of newborn (P74.5), transitory hyperammonemia of newborn (P74.6), other transitory metabolic disturbances of newborn (P74.8) and transitory metabolic disturbance of newborn, unspecified (P74.9).

To report this condition, pick the subcode that matches the documentation: P74.31 (newborn) and P74.32 (newborn).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2019 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 775.5 (other transitory neonatal electrolyte disturbances).