Alphabetic Index FY2027

P71

Transitory neonatal disorders of calcium and magnesium metabolism

FY2027Chapter 16: Certain conditions originating in the perinatal period/P70–P74 Transitory endocrine and metabolic disorders specific to newborn

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

P71 is a non-billable ICD-10-CM code category for transitory neonatal disorders of calcium and magnesium metabolism. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are P71.0 Cow's milk hypocalcemia in newborn, P71.1 Other neonatal hypocalcemia, P71.2 Neonatal hypomagnesemia, P71.3 Neonatal tetany without calcium or magnesium deficiency and 3 more. Its coding notes include 5 Excludes2 entries.

Guidelines tip

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

Chapter 16 codes are never used on the maternal record, and chapter 15 codes are never used on the newborn record. Chapter 16 codes can be used for life if the condition persists.

Guidelines I.C.16.a.1Perinatal codes and the maternal recordRead the official text

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (5 notes)
Inherited from Chapter 16 Certain conditions originating in the perinatal period
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • tetanus neonatorum (A33)

Includes

Further defines or gives examples of the content of the category.

Also from chapter/block level (2 notes)
Inherited from P70–P74 Transitory endocrine and metabolic disorders specific to newborn
  • transitory endocrine and metabolic disturbances caused by the infant's response to maternal endocrine and metabolic factors, or its adjustment to extrauterine environment
Inherited from Chapter 16 Certain conditions originating in the perinatal period
  • conditions that have their origin in the fetal or perinatal period (before birth through the first 28 days after birth) even if morbidity occurs later

Notes

Also from chapter/block level (1 note)
Inherited from Chapter 16 Certain conditions originating in the perinatal period
  • Codes from this chapter are for use on newborn records only, never on maternal records

More specific codes under P71 7