P74.31 Hyperkalemia 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 P74.31

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 P74.31

• Disturbance (s) › electrolyte › newborn, transitory › potassium balance › hyperkalemia
• Disturbance (s) › potassium balance, newborn › hyperkalemia
• Imbalance › electrolyte › neonatal, transitory NEC › potassium › hyperkalemia

Nearby codes

• P74.1 Dehydration of newborn
• P74.2 Disturbances of sodium balance of newborn
• P74.21 Hypernatremia of newborn
• P74.22 Hyponatremia of newborn
• P74.3 Disturbances of potassium balance of newborn
• P74.31 Hyperkalemia of newborn (this code)
• P74.32 Hypokalemia of newborn
• P74.4 Other transitory electrolyte disturbances of newborn
• P74.41 Alkalosis of newborn
• P74.42 Disturbances of chlorine balance of newborn
• P74.421 Hyperchloremia of newborn