Neonatal tetany without calcium or magnesium deficiency

This code signifies a condition in a newborn characterized by muscle spasms, tremors, or seizures (tetany) that is not caused by low levels of calcium or magnesium. It indicates a form of neonatal tetany where electrolyte imbalances of calcium and magnesium have been ruled out as the etiology.

Use this code when documentation clearly states neonatal tetany is present, and laboratory results confirm normal serum calcium and magnesium levels. This diagnosis is appropriate when other causes of neonatal seizures or neuromuscular irritability have been investigated and excluded.

• Ensure physician documentation explicitly states "without calcium or magnesium deficiency" or similar wording.
• Do not use this code if hypocalcemia or hypomagnesemia is identified as the cause of the tetany; instead, code the specific electrolyte imbalance.
• Consider sequencing this code after any underlying conditions contributing to the tetany, if known and documented.