P74.21 Hypernatremia of newborn

Billable ICD-10-CM code, FY2026.

MS-DRG index

Defines the logic of DRG(s) 791 in MDC 15.

Code annotations containing back-references to P74.21

Back-references to P74

• Type 2 Excludes: P00 Newborn affected by maternal conditions that may be unrelated to present pregnancy ("newborn affected by maternal endocrine and metabolic disorders (P70-P74)")

Diagnosis Index entries for P74.21

• Disturbance (s) › electrolyte › newborn, transitory › sodium balance › hypernatremia
• Disturbance (s) › sodium balance, newborn › hypernatremia
• Imbalance › electrolyte › neonatal, transitory NEC › sodium › hypernatremia
• Newborn (infant) (liveborn) (singleton) › hypernatremia

Nearby codes

• P74 Other transitory neonatal electrolyte and metabolic disturbances
• P74.0 Late metabolic acidosis of newborn
• P74.1 Dehydration of newborn
• P74.2 Disturbances of sodium balance of newborn
• P74.21 Hypernatremia of newborn (this code)
• P74.22 Hyponatremia of newborn
• P74.3 Disturbances of potassium balance of newborn
• P74.31 Hyperkalemia of newborn
• P74.32 Hypokalemia of newborn
• P74.4 Other transitory electrolyte disturbances of newborn