Home / ICD-10-CM / Chapter 20 / T59

T59 Toxic effect of other gases, fumes and vapors

ICD-10-CM category T59 sits in Chapter 20 (External causes of morbidity, V00-Y99). It contains 144 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

T59.0 Toxic effect of nitrogen oxidesT59.0X Toxic effect of nitrogen oxidesT59.0X1 Toxic effect of nitrogen oxides, accidental (unintentional)T59.0X2 Toxic effect of nitrogen oxides, intentional self-harmT59.0X3 Toxic effect of nitrogen oxides, assaultT59.0X4 Toxic effect of nitrogen oxides, undeterminedT59.1 Toxic effect of sulfur dioxideT59.1X Toxic effect of sulfur dioxideT59.1X1 Toxic effect of sulfur dioxide, accidental (unintentional)T59.1X2 Toxic effect of sulfur dioxide, intentional self-harmT59.1X3 Toxic effect of sulfur dioxide, assaultT59.1X4 Toxic effect of sulfur dioxide, undeterminedT59.2 Toxic effect of formaldehydeT59.2X Toxic effect of formaldehydeT59.2X1 Toxic effect of formaldehyde, accidental (unintentional)T59.2X2 Toxic effect of formaldehyde, intentional self-harmT59.2X3 Toxic effect of formaldehyde, assaultT59.2X4 Toxic effect of formaldehyde, undeterminedT59.3 Toxic effect of lacrimogenic gasT59.3X Toxic effect of lacrimogenic gasT59.3X1 Toxic effect of lacrimogenic gas, accidental (unintentional)T59.3X2 Toxic effect of lacrimogenic gas, intentional self-harmT59.3X3 Toxic effect of lacrimogenic gas, assaultT59.3X4 Toxic effect of lacrimogenic gas, undeterminedT59.4 Toxic effect of chlorine gasT59.4X Toxic effect of chlorine gasT59.4X1 Toxic effect of chlorine gas, accidental (unintentional)T59.4X2 Toxic effect of chlorine gas, intentional self-harmT59.4X3 Toxic effect of chlorine gas, assaultT59.4X4 Toxic effect of chlorine gas, undeterminedT59.5 Toxic effect of fluorine gas and hydrogen fluorideT59.5X Toxic effect of fluorine gas and hydrogen fluorideT59.5X1 Toxic effect of fluorine gas and hydrogen fluoride, accT59.5X2 Toxic effect of fluorine gas and hydrogen fluoride, slf-hrmT59.5X3 Toxic effect of fluorine gas and hydrogen fluoride, assaultT59.5X4 Toxic effect of fluorine gas and hydrogen fluoride, undetT59.6 Toxic effect of hydrogen sulfideT59.6X Toxic effect of hydrogen sulfideT59.6X1 Toxic effect of hydrogen sulfide, accidental (unintentional)T59.6X2 Toxic effect of hydrogen sulfide, intentional self-harm

Billable codes in T59

CodeDescription
T59.0X1AToxic effect of nitrogen oxides, accidental (unintentional), initial encounter
T59.0X1DToxic effect of nitrogen oxides, accidental (unintentional), subsequent encounter
T59.0X1SToxic effect of nitrogen oxides, accidental (unintentional), sequela
T59.0X2AToxic effect of nitrogen oxides, intentional self-harm, initial encounter
T59.0X2DToxic effect of nitrogen oxides, intentional self-harm, subsequent encounter
T59.0X2SToxic effect of nitrogen oxides, intentional self-harm, sequela
T59.0X3AToxic effect of nitrogen oxides, assault, initial encounter
T59.0X3DToxic effect of nitrogen oxides, assault, subsequent encounter
T59.0X3SToxic effect of nitrogen oxides, assault, sequela
T59.0X4AToxic effect of nitrogen oxides, undetermined, initial encounter
T59.0X4DToxic effect of nitrogen oxides, undetermined, subsequent encounter
T59.0X4SToxic effect of nitrogen oxides, undetermined, sequela
T59.1X1AToxic effect of sulfur dioxide, accidental (unintentional), initial encounter
T59.1X1DToxic effect of sulfur dioxide, accidental (unintentional), subsequent encounter
T59.1X1SToxic effect of sulfur dioxide, accidental (unintentional), sequela
T59.1X2AToxic effect of sulfur dioxide, intentional self-harm, initial encounter
T59.1X2DToxic effect of sulfur dioxide, intentional self-harm, subsequent encounter
T59.1X2SToxic effect of sulfur dioxide, intentional self-harm, sequela
T59.1X3AToxic effect of sulfur dioxide, assault, initial encounter
T59.1X3DToxic effect of sulfur dioxide, assault, subsequent encounter
T59.1X3SToxic effect of sulfur dioxide, assault, sequela
T59.1X4AToxic effect of sulfur dioxide, undetermined, initial encounter
T59.1X4DToxic effect of sulfur dioxide, undetermined, subsequent encounter
T59.1X4SToxic effect of sulfur dioxide, undetermined, sequela
T59.2X1AToxic effect of formaldehyde, accidental (unintentional), initial encounter
T59.2X1DToxic effect of formaldehyde, accidental (unintentional), subsequent encounter
T59.2X1SToxic effect of formaldehyde, accidental (unintentional), sequela
T59.2X2AToxic effect of formaldehyde, intentional self-harm, initial encounter
T59.2X2DToxic effect of formaldehyde, intentional self-harm, subsequent encounter
T59.2X2SToxic effect of formaldehyde, intentional self-harm, sequela
T59.2X3AToxic effect of formaldehyde, assault, initial encounter
T59.2X3DToxic effect of formaldehyde, assault, subsequent encounter
T59.2X3SToxic effect of formaldehyde, assault, sequela
T59.2X4AToxic effect of formaldehyde, undetermined, initial encounter
T59.2X4DToxic effect of formaldehyde, undetermined, subsequent encounter
T59.2X4SToxic effect of formaldehyde, undetermined, sequela
T59.3X1AToxic effect of lacrimogenic gas, accidental (unintentional), initial encounter
T59.3X1DToxic effect of lacrimogenic gas, accidental (unintentional), subsequent encounter
T59.3X1SToxic effect of lacrimogenic gas, accidental (unintentional), sequela
T59.3X2AToxic effect of lacrimogenic gas, intentional self-harm, initial encounter
T59.3X2DToxic effect of lacrimogenic gas, intentional self-harm, subsequent encounter
T59.3X2SToxic effect of lacrimogenic gas, intentional self-harm, sequela
T59.3X3AToxic effect of lacrimogenic gas, assault, initial encounter
T59.3X3DToxic effect of lacrimogenic gas, assault, subsequent encounter
T59.3X3SToxic effect of lacrimogenic gas, assault, sequela
T59.3X4AToxic effect of lacrimogenic gas, undetermined, initial encounter
T59.3X4DToxic effect of lacrimogenic gas, undetermined, subsequent encounter
T59.3X4SToxic effect of lacrimogenic gas, undetermined, sequela
T59.4X1AToxic effect of chlorine gas, accidental (unintentional), initial encounter
T59.4X1DToxic effect of chlorine gas, accidental (unintentional), subsequent encounter
T59.4X1SToxic effect of chlorine gas, accidental (unintentional), sequela
T59.4X2AToxic effect of chlorine gas, intentional self-harm, initial encounter
T59.4X2DToxic effect of chlorine gas, intentional self-harm, subsequent encounter
T59.4X2SToxic effect of chlorine gas, intentional self-harm, sequela
T59.4X3AToxic effect of chlorine gas, assault, initial encounter
T59.4X3DToxic effect of chlorine gas, assault, subsequent encounter
T59.4X3SToxic effect of chlorine gas, assault, sequela
T59.4X4AToxic effect of chlorine gas, undetermined, initial encounter
T59.4X4DToxic effect of chlorine gas, undetermined, subsequent encounter
T59.4X4SToxic effect of chlorine gas, undetermined, sequela
T59.5X1AToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), initial encounter
T59.5X1DToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), subsequent encounter
T59.5X1SToxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional), sequela
T59.5X2AToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, initial encounter
T59.5X2DToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, subsequent encounter
T59.5X2SToxic effect of fluorine gas and hydrogen fluoride, intentional self-harm, sequela
T59.5X3AToxic effect of fluorine gas and hydrogen fluoride, assault, initial encounter
T59.5X3DToxic effect of fluorine gas and hydrogen fluoride, assault, subsequent encounter
T59.5X3SToxic effect of fluorine gas and hydrogen fluoride, assault, sequela
T59.5X4AToxic effect of fluorine gas and hydrogen fluoride, undetermined, initial encounter
T59.5X4DToxic effect of fluorine gas and hydrogen fluoride, undetermined, subsequent encounter
T59.5X4SToxic effect of fluorine gas and hydrogen fluoride, undetermined, sequela
T59.6X1AToxic effect of hydrogen sulfide, accidental (unintentional), initial encounter
T59.6X1DToxic effect of hydrogen sulfide, accidental (unintentional), subsequent encounter
T59.6X1SToxic effect of hydrogen sulfide, accidental (unintentional), sequela
T59.6X2AToxic effect of hydrogen sulfide, intentional self-harm, initial encounter
T59.6X2DToxic effect of hydrogen sulfide, intentional self-harm, subsequent encounter
T59.6X2SToxic effect of hydrogen sulfide, intentional self-harm, sequela
T59.6X3AToxic effect of hydrogen sulfide, assault, initial encounter
T59.6X3DToxic effect of hydrogen sulfide, assault, subsequent encounter
T59.6X3SToxic effect of hydrogen sulfide, assault, sequela
T59.6X4AToxic effect of hydrogen sulfide, undetermined, initial encounter
T59.6X4DToxic effect of hydrogen sulfide, undetermined, subsequent encounter
T59.6X4SToxic effect of hydrogen sulfide, undetermined, sequela
T59.7X1AToxic effect of carbon dioxide, accidental (unintentional), initial encounter
T59.7X1DToxic effect of carbon dioxide, accidental (unintentional), subsequent encounter
T59.7X1SToxic effect of carbon dioxide, accidental (unintentional), sequela
T59.7X2AToxic effect of carbon dioxide, intentional self-harm, initial encounter
T59.7X2DToxic effect of carbon dioxide, intentional self-harm, subsequent encounter
T59.7X2SToxic effect of carbon dioxide, intentional self-harm, sequela
T59.7X3AToxic effect of carbon dioxide, assault, initial encounter
T59.7X3DToxic effect of carbon dioxide, assault, subsequent encounter
T59.7X3SToxic effect of carbon dioxide, assault, sequela
T59.7X4AToxic effect of carbon dioxide, undetermined, initial encounter
T59.7X4DToxic effect of carbon dioxide, undetermined, subsequent encounter
T59.7X4SToxic effect of carbon dioxide, undetermined, sequela
T59.811AToxic effect of smoke, accidental (unintentional), initial encounter
T59.811DToxic effect of smoke, accidental (unintentional), subsequent encounter
T59.811SToxic effect of smoke, accidental (unintentional), sequela
T59.812AToxic effect of smoke, intentional self-harm, initial encounter
T59.812DToxic effect of smoke, intentional self-harm, subsequent encounter
T59.812SToxic effect of smoke, intentional self-harm, sequela
T59.813AToxic effect of smoke, assault, initial encounter
T59.813DToxic effect of smoke, assault, subsequent encounter
T59.813SToxic effect of smoke, assault, sequela
T59.814AToxic effect of smoke, undetermined, initial encounter
T59.814DToxic effect of smoke, undetermined, subsequent encounter
T59.814SToxic effect of smoke, undetermined, sequela
T59.821AToxic effect of hexamethylene diisocyanate, accidental (unintentional), initial encounter
T59.821DToxic effect of hexamethylene diisocyanate, accidental (unintentional), subsequent encounter
T59.821SToxic effect of hexamethylene diisocyanate, accidental (unintentional), sequela
T59.822AToxic effect of hexamethylene diisocyanate, intentional self-harm, initial encounter
T59.822DToxic effect of hexamethylene diisocyanate, intentional self-harm, subsequent encounter
T59.822SToxic effect of hexamethylene diisocyanate, intentional self-harm, sequela
T59.823AToxic effect of hexamethylene diisocyanate, assault, initial encounter
T59.823DToxic effect of hexamethylene diisocyanate, assault, subsequent encounter
T59.823SToxic effect of hexamethylene diisocyanate, assault, sequela
T59.824AToxic effect of hexamethylene diisocyanate, undetermined, initial encounter
T59.824DToxic effect of hexamethylene diisocyanate, undetermined, subsequent encounter
T59.824SToxic effect of hexamethylene diisocyanate, undetermined, sequela
T59.891AToxic effect of other specified gases, fumes and vapors, accidental (unintentional), initial encounter
T59.891DToxic effect of other specified gases, fumes and vapors, accidental (unintentional), subsequent encounter
T59.891SToxic effect of other specified gases, fumes and vapors, accidental (unintentional), sequela
T59.892AToxic effect of other specified gases, fumes and vapors, intentional self-harm, initial encounter
T59.892DToxic effect of other specified gases, fumes and vapors, intentional self-harm, subsequent encounter
T59.892SToxic effect of other specified gases, fumes and vapors, intentional self-harm, sequela
T59.893AToxic effect of other specified gases, fumes and vapors, assault, initial encounter
T59.893DToxic effect of other specified gases, fumes and vapors, assault, subsequent encounter
T59.893SToxic effect of other specified gases, fumes and vapors, assault, sequela
T59.894AToxic effect of other specified gases, fumes and vapors, undetermined, initial encounter
T59.894DToxic effect of other specified gases, fumes and vapors, undetermined, subsequent encounter
T59.894SToxic effect of other specified gases, fumes and vapors, undetermined, sequela
T59.91XAToxic effect of unspecified gases, fumes and vapors, accidental (unintentional), initial encounter
T59.91XDToxic effect of unspecified gases, fumes and vapors, accidental (unintentional), subsequent encounter
T59.91XSToxic effect of unspecified gases, fumes and vapors, accidental (unintentional), sequela
T59.92XAToxic effect of unspecified gases, fumes and vapors, intentional self-harm, initial encounter
T59.92XDToxic effect of unspecified gases, fumes and vapors, intentional self-harm, subsequent encounter
T59.92XSToxic effect of unspecified gases, fumes and vapors, intentional self-harm, sequela
T59.93XAToxic effect of unspecified gases, fumes and vapors, assault, initial encounter
T59.93XDToxic effect of unspecified gases, fumes and vapors, assault, subsequent encounter
T59.93XSToxic effect of unspecified gases, fumes and vapors, assault, sequela
T59.94XAToxic effect of unspecified gases, fumes and vapors, undetermined, initial encounter
T59.94XDToxic effect of unspecified gases, fumes and vapors, undetermined, subsequent encounter
T59.94XSToxic effect of unspecified gases, fumes and vapors, undetermined, sequela

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