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    v1.0.28
    OpenPayerBilling CodesOther and unspecified effects of external causesICD-10-CM t67-effects-of-heat-and-light
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    ICD-10-CM Code For Effects Of Heat And Light: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group T67 includes conditions caused by exposure to excessive heat and light such as heatstroke, heat exhaustion, heat syncope, heat cramps, and sunburns. These ICD-10-CM diagnosis codes are used to document clinical presentations ranging from mild thermal injuries to life-threatening hyperthermia and related organ dysfunction, capturing severity and complications. Accurate coding within the ICD-10-CM T67 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM T67: Effects Of Heat And Light Overview

    The diagnoses in this group represent injuries and disorders resulting from environmental exposure to excessive heat, including heatstroke, heat exhaustion, heat syncope, and sunburn from ultraviolet light. These conditions primarily affect thermoregulation and skin integrity but can involve multiple organ systems when severe. Accurate coding matters for reimbursement because it documents severity, complications, and the need for specific levels of care.

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    When to Use

    Use a code from ICD-10-CM T67 when a patient presents with signs or a diagnosis attributable to exposure to excessive heat or ultraviolet light, such as documented heatstroke, heat exhaustion, or sunburn. Select codes that reflect the specific clinical condition, severity, and any complications or organ system involvement documented in the medical record.

    ICD-10-CM Codes

    36 rows

    ICD-10-CM CodeDescription
    T67.01XAHeatstroke and sunstroke, initial encounter
    T67.01XDHeatstroke and sunstroke, subsequent encounter
    T67.01XSHeatstroke and sunstroke, sequela
    T67.02XAExertional heatstroke, initial encounter
    T67.02XDExertional heatstroke, subsequent encounter
    T67.02XSExertional heatstroke, sequela
    T67.09XAOther heatstroke and sunstroke, initial encounter
    T67.09XDOther heatstroke and sunstroke, subsequent encounter
    T67.09XSOther heatstroke and sunstroke, sequela
    T67.1XXAHeat syncope, initial encounter
    T67.1XXDHeat syncope, subsequent encounter
    T67.1XXSHeat syncope, sequela
    T67.2XXAHeat cramp, initial encounter
    T67.2XXDHeat cramp, subsequent encounter
    T67.2XXSHeat cramp, sequela
    T67.3XXAHeat exhaustion, anhydrotic, initial encounter
    T67.3XXDHeat exhaustion, anhydrotic, subsequent encounter
    T67.3XXSHeat exhaustion, anhydrotic, sequela
    T67.4XXAHeat exhaustion due to salt depletion, initial encounter
    T67.4XXDHeat exhaustion due to salt depletion, subsequent encounter

    Showing 1–20 of 36

    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 adult construction worker is brought to the emergency department after collapsing on a hot summer day with confusion, high body temperature, tachycardia, and hypotension following prolonged sun exposure while dehydrated; emergency treatment focuses on rapid cooling and fluid resuscitation. A diagnosis from this group is assigned for classic heatstroke (heat illness with central nervous system dysfunction) occurring acutely due to environmental heat exposure. Typical codes: T67.01XA, T67.01XD
    • An elderly nursing home resident receiving diuretics develops progressive weakness, dizziness, and syncope over several days during a heat wave; outpatient evaluation finds orthostatic hypotension and elevated serum sodium consistent with heat-related volume depletion. A heat-related dehydration or heat syncope diagnosis from this group is used to capture the ongoing systemic effects of heat exposure exacerbating chronic conditions. Typical codes: T67.02XA, T67.02XD
    • A patient presents to clinic several weeks after severe sunburn with persistent blistering and localized tissue necrosis at the burn sites, complicated by wound infection requiring topical care and possible debridement. A code from this group is assigned to document the delayed or worsening effects of thermal (sun) injury and to indicate the complication needing continued management. Typical codes: T67.09XA, T67.09XD

    Related Codes

    T66-RADIATION-SICKNESS-UNSPECIFIED

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

    T68-HYPOTHERMIA

    ICD-10-CM Code For Hypothermia: 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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