ICD-10 code for Dehydration newborn

The ICD-10-CM code for Dehydration newborn is P74.1 (Dehydration of newborn).

Within P74 (other transitory neonatal electrolyte and metabolic disturbances), P74.1 is specifically for Dehydration of newborn. Related codes cover late metabolic acidosis of newborn (P74.0), disturbances of sodium balance of newborn (P74.2), disturbances of potassium balance of newborn (P74.3), 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).

It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.

In MS-DRG v44.0, it is part of the grouping logic for DRG 791 (Prematurity with Major Problems, relative weight 4.1075) and DRG 793 (Full Term Neonate with Major Problems, relative weight 4.2195), in MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.