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    OpenPayerBilling CodesConditions involving the integument and temperature regulation of newbornICD-10-CM p81-other-disturbances-of-temperature-regulation
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    ICD-10-CM Code For Other Disturbances Of Temperature Regulation Of Newborn: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group P81 includes disorders of neonatal temperature regulation such as neonatal hypothermia, hyperthermia, and other disturbances not classified elsewhere that affect a newborn's ability to maintain normal body temperature. These ICD-10-CM diagnosis codes are used to document clinical scenarios where temperature instability is present, capturing severity, associated complications, and the need for interventions such as warming, cooling, or supportive care. Accurate coding within the ICD-10-CM P81 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM P81: Other Disturbances Of Temperature Regulation Of Newborn Overview

    The ICD-10-CM P81 code group represents disorders of neonatal thermoregulation, including conditions such as neonatal hypothermia and hyperthermia not elsewhere classified. These diagnoses target the newborn's ability to maintain normal body temperature and often involve integumentary and systemic responses. Accurate coding matters for complete clinical documentation and supports correct claim processing and facility reimbursement.

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    When to Use

    Use a code from this group when a newborn presents with documented abnormal body temperature or clinical signs indicating failure to maintain thermal homeostasis and no more specific code applies. Apply these codes to capture the presence, severity, and any related interventions used to manage the infant's temperature instability.

    ICD-10-CM Codes

    3 rows

    ICD-10-CM CodeDescription
    P81.0Environmental hyperthermia of newborn
    P81.8Other specified disturbances of temperature regulation of newborn
    P81.9Disturbance of temperature regulation of newborn, unspecified

    DRG Codes

    1 rows

    DRG CodeDescription
    794Neonate with Other Significant Problems

    Typical Clinical Scenarios

    • A term newborn delivered after prolonged maternal fever and chorioamnionitis presents in the nursery with persistent hypothermia despite appropriate environmental warming and normal glucose and infection workup; neonatal care staff document impaired thermoregulation requiring temperature support. A diagnosis from this group is assigned to capture the newborn’s disturbance of temperature regulation not attributable to another specific perinatal condition. Typical codes: P81.0, P81.9
    • A preterm infant in the NICU develops episodic hyperthermia with unstable vital signs during weaning from incubator heat and after administration of certain medications; clinicians consider immature hypothalamic control of body temperature as the primary issue after excluding sepsis. This scenario leads to coding a disorder of temperature regulation of the newborn as a comorbidity affecting care in the neonatal period. Typical codes: P81.8, P81.9
    • A late preterm baby discharged home with home temperature-monitoring shows recurrent temperature instability episodes prompting readmission for evaluation of possible environmental and neurologic causes; during readmission no other perinatal complications are found and documentation identifies ongoing newborn thermoregulatory disturbance. The diagnosis from this group is used to indicate the condition complicating the infant’s postnatal course and need for monitoring. Typical codes: P81.9

    Related Codes

    P83-OTHER-CONDITIONS-OF-INTEGUMENT-NEWBORN

    ICD-10-CM Code For Other Conditions Of Integument Specific To Newborn: 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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