P74.31 ICD-10-CA code: Hyperkalaemia of newborn
P74.31 is the ICD-10-CA code for “Hyperkalaemia of newborn” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
P74.31Hyperkalaemia of newborn
ICD-10-CA · Canada · Also written P7431
Index terms
Entries in CIHI’s alphabetical index that lead to P74.31. Searching the index by the condition the note names is how coders reach this code.
- Hyperkalemia, newborn
Notes for P74.31
As CIHI prints them, with any note P74.31 takes from the headings above it.
Includes
- Transitory endocrine and metabolic disturbances caused by the infant's response to maternal endocrine and metabolic factors, or its adjustment to extrauterine existenceFrom P70-P74 Transitory endocrine and metabolic disorders specific to fetus and newborn
- Conditions that have their origin in the perinatal period even though death or morbidity occurs laterFrom Chapter 16: Certain conditions originating in the perinatal period (P00-P96)
Excludes
Conditions classified elsewhere.
- Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)tetanus neonatorum (A33)whooping cough (A37.-)From Chapter 16: Certain conditions originating in the perinatal period (P00-P96)
Where P74.31 sits
- 1ChapterChapter 16: Certain conditions originating in the perinatal period (P00-P96)
- 2Block P70-P74Transitory endocrine and metabolic disorders specific to fetus and newborn
- 3Category P74Other transitory neonatal electrolyte and metabolic disturbances
- 4Subcategory P74.3Disturbances of potassium balance of newborn
- 5Valid code P74.31Hyperkalaemia of newborn
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code P74.31 mean?
P74.31 is the ICD-10-CA code for “Hyperkalaemia of newborn” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is P74.31 in ICD-10-CA?
P74.31 sits under P74.3 Disturbances of potassium balance of newborn, within P74 Other transitory neonatal electrolyte and metabolic disturbances, within P70-P74 Transitory endocrine and metabolic disorders specific to fetus and newborn, within Chapter 16: Certain conditions originating in the perinatal period (P00-P96).
What coding notes apply to P74.31?
ICD-10-CA lists Includes, Excludes notes for P74.31, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.