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    OpenPayerBilling CodesTransitory endocrine and metabolic disorders specific to newbornICD-10-CM p71-transitory-neonatal-calcium-magnesium-disorders
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    ICD-10-CM Code For Transitory Neonatal Disorders Of Calcium And Magnesium Metabolism: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group P71 includes transient neonatal disorders of calcium and magnesium metabolism such as neonatal hypocalcemia, hypermagnesemia, and related electrolyte disturbances occurring in the immediate newborn period. These ICD-10-CM diagnosis codes are used to document clinical scenarios involving altered mineral homeostasis in neonates, capturing severity, electrolyte imbalance, and any associated organ system effects. Accurate coding within the ICD-10-CM P71 group supports proper claim adjudication by reflecting clinical complexity and ensuring complete clinical documentation for appropriate reimbursement.

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    ICD-10-CM P71: Transitory Neonatal Disorders Of Calcium And Magnesium Metabolism Overview

    This group represents transient disturbances in calcium and magnesium homeostasis occurring in the newborn period, affecting neonatal metabolic and endocrine function. These conditions target mineral metabolism and can influence neuromuscular, cardiac, and neurologic status in neonates. Accurate coding matters for reimbursement because it documents clinical complexity and supports appropriate claim adjudication tied to neonatal care resources.

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    When to Use

    Use a code from this group when a newborn is diagnosed with a transient disturbance of calcium or magnesium metabolism documented by clinicians. Select the specific code that reflects the confirmed electrolyte abnormality, timing, and any documented complications or manifestations.

    ICD-10-CM Codes

    7 rows

    ICD-10-CM CodeDescription
    P71.0Cow's milk hypocalcemia in newborn
    P71.1Other neonatal hypocalcemia
    P71.2Neonatal hypomagnesemia
    P71.3Neonatal tetany without calcium or magnesium deficiency
    P71.4Transitory neonatal hypoparathyroidism
    P71.8Other transitory neonatal disorders of calcium and magnesium metabolism
    P71.9Transitory neonatal disorder of calcium and magnesium metabolism, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    791Prematurity with Major Problems
    793Full Term Neonate with Major Problems

    Typical Clinical Scenarios

    • A term newborn presents within the first 48 hours of life with jitteriness, poor feeding, and tremors; laboratory testing shows total and ionized serum calcium significantly below the reference range for neonates. The infant was otherwise uncomplicated at delivery but required evaluation in the newborn nursery for symptomatic hypocalcemia; a transitory neonatal hypocalcemia code is assigned for the acute metabolic disturbance. Typical codes: P71.0
    • A preterm infant in the NICU on parenteral nutrition develops low serum magnesium with neuromuscular irritability and apnea; magnesium levels improve after short-term supplementation and electrolyte stabilization. Because the disturbance is a transient metabolic derangement related to the newborn period and treatment course, a transitory neonatal hypomagnesemia code is used to document the condition during hospitalization. Typical codes: P71.1
    • A newborn who experienced perinatal asphyxia is being treated for multiple metabolic abnormalities including temporary hypermagnesemia or altered calcium homeostasis detected on serial labs; these electrolyte disturbances complicate the infant’s recovery and lengthen the neonatal stay. The coding reflects a transitory neonatal disorder of calcium or magnesium metabolism as a comorbid condition affecting the newborn’s management. Typical codes: P71.8, P71.9

    Related Codes

    P70-TRANSITORY-CARBOHYDRATE-DISORDERS-NEWBORN

    ICD-10-CM Code For Transitory Disorders Of Carbohydrate Metabolism Specific To Newborn: Group Overview

    P72-OTHER-TRANSITORY-NEONATAL-ENDOCRINE-DISORDERS

    ICD-10-CM Code For Other Transitory Neonatal Endocrine Disorders: Group Overview

    P74-OTHER-TRANSITORY-NEONATAL-ELECTROLYTE-DISTURBANCES

    ICD-10-CM Code For Other Transitory Neonatal Electrolyte And Metabolic Disturbances: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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