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    v1.0.28
    OpenPayerBilling CodesOther and unspecified effects of external causesICD-10-CM t68-hypothermia
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    ICD-10-CM Code For Hypothermia: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T68 includes diagnoses for hypothermia and conditions resulting from abnormally low core body temperature, ranging from mild to severe hypothermia and related systemic effects. These ICD-10-CM diagnosis codes are used to document clinical encounters for patients with cold-related body temperature loss, capturing severity, associated complications, and exposure context. Accurate coding within the ICD-10-CM T68 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM T68: Hypothermia Overview

    The ICD-10-CM T68 group includes diagnoses for hypothermia, a condition caused by abnormally low body temperature affecting thermoregulatory function. These codes target systemic temperature-related injury rather than a specific organ system, and they capture severity and complications related to cold exposure. Accurate coding matters for complete clinical documentation and appropriate reimbursement by conveying illness severity and encounter context.

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    When to Use

    Use a code from this group when a patient presents with documented hypothermia attributable to environmental or external cold exposure. Assign codes that reflect the documented severity and any associated complications or systemic effects.

    ICD-10-CM Codes

    3 rows

    ICD-10-CM CodeDescription
    T68.XXXAHypothermia, initial encounter
    T68.XXXDHypothermia, subsequent encounter
    T68.XXXSHypothermia, sequela

    DRG Codes

    4 rows

    DRG CodeDescription
    922Other Injury, Poisoning and Toxic Effect Diagnoses with MCC
    923Other Injury, Poisoning and Toxic Effect Diagnoses without MCC
    949Aftercare with CC/MCC
    950Aftercare without CC/MCC

    Typical Clinical Scenarios

    • An elderly nursing home resident is found outdoors after a winter fall and is brought to the emergency department with confusion, slow respirations, and a core temperature measured at 30.5°C. Emergency clinicians provide active rewarming and monitor for cardiac instability; the presentation is acute and life-threatening, so an initial encounter code from this group is assigned to document the hypothermia diagnosis and facilitate acute care tracking. Typical codes: T68.XXXA
    • A middle-aged homeless individual with chronic alcohol use presents to a community clinic in late autumn with persistent numbness, shivering, and intermittent confusion after repeated overnight exposure to cold; symptoms have been present for several days but patient does not require inpatient resuscitation. This subacute outpatient situation represents ongoing hypothermic injury being managed outside the acute emergency setting, so a subsequent or non-initial encounter code from the group may be used to reflect continued care. Typical codes: T68.XXXD
    • A recently discharged trauma patient develops a postoperative arrhythmia and delayed wound healing after intraoperative exposure and prolonged hypothermia during surgery; the hypothermia is documented as a complicating condition contributing to the patient's current complications and impacts treatment decisions. In this case, a code indicating the sequela of the earlier hypothermic event is assigned to capture its residual effects on recovery. Typical codes: T68.XXXS

    Related Codes

    T66-RADIATION-SICKNESS-UNSPECIFIED

    ICD-10-CM Code For Radiation Sickness Unspecified: Group Overview

    T67-EFFECTS-OF-HEAT-AND-LIGHT

    ICD-10-CM Code For Effects Of Heat And Light: Group Overview

    T69-OTHER-EFFECTS-OF-REDUCED-TEMPERATURE

    ICD-10-CM Code For Other Effects Of Reduced Temperature: Group Overview

    T70-EFFECTS-OF-AIR-PRESSURE

    ICD-10-CM Code For Effects Of Air Pressure And Water Pressure: Group Overview

    T71-ASPHYXIATION-AND-RELATED-CONDITIONS

    ICD-10-CM Code For Asphyxiation: Group Overview

    T74-ADULT-AND-CHILD-ABUSE

    ICD-10-CM Code For Adult And Child Abuse Neglect And Other Maltreatment Confirmed: Group Overview

    T75-OTHER-AND-UNSPECIFIED-EFFECTS

    ICD-10-CM Code For Other And Unspecified Effects Of Other External Causes: Group Overview

    T76-ADULT-AND-CHILD-ABUSE-NEGLECT

    ICD-10-CM Code For Adult And Child Abuse Neglect And Other Maltreatment Suspected: Group Overview

    T78-ADVERSE-EFFECTS-NOT-ELSEWHERE-CLASSIFIED

    ICD-10-CM Code For Adverse Effects Not Elsewhere Classified: 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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