ICD-9-CM diagnosis code (retired)
775.4 — Hypocalcemia and hypomagnesemia of newborn
ICD-9-CM was replaced by ICD-10 on October 1, 2015. These are the ICD-10-CM equivalents from the CMS General Equivalence Mappings.
About ICD-9-CM 775.4
775.4 is an ICD-9-CM diagnosis code for hypocalcemia and hypomagnesemia of newborn. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.
The CMS General Equivalence Mappings translate it to 6 ICD-10-CM codes, such as P71.0 (Cow's milk hypocalcemia in newborn), P71.1 (Other neonatal hypocalcemia) and P71.2 (Neonatal hypomagnesemia). All of these are approximate matches, so review the record to pick the right one.
ICD-10-CM equivalents
- P71.0Cow's milk hypocalcemia in newbornapproximate
- P71.1Other neonatal hypocalcemiaapproximate
- P71.2Neonatal hypomagnesemiaapproximate
- P71.3Neonatal tetany without calcium or magnesium deficiencyapproximate
- P71.4Transitory neonatal hypoparathyroidismapproximate
- P71.8Other transitory neonatal disorders of calcium and magnesium metabolismapproximate
Common questions about 775.4
GEMs are a translation aid, not a substitute for coding from the record. The 2027 ICD-10 code set has changed since the last GEMs release in 2018. Page updated September 29, 2026.