DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

T59 Toxic effect of other gases, fumes and vapors

  • Header · not billable
  • Codes take a 7th character

T59 is not billable. The category heads 144 billable codes in FY2027, grouped under 10 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

FY2027 changes under T59: 12 billable codes added. All FY2027 changes.

Index → code

  • Vapor asphyxia or suffocation → T59.9
  • Inhalationsmoke → T59.81-
  • Inhalationsteam → T59.9-

Where it sits

  1. Chapter 19 Injury, poisoning and certain other consequences of external causes (S00-T88)
  2. T51-T65 Toxic effects of substances chiefly nonmedicinal as to source (T51-T65)
  3. T59 Toxic effect of other gases, fumes and vapors
Billable codes
144
Subdivisions
10
CC / MCC codes
0 / 0
HCC V28 codes
11
New FY2027
12
Index entries
7

Codes in T59

  1. T59.0
    Toxic effect of nitrogen oxides
    Header
  2. T59.0X
    Toxic effect of nitrogen oxides
    Header
  3. T59.0X1
    Toxic effect of nitrogen oxides, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of nitrogen oxides NOS
  4. T59.0X2
    Toxic effect of nitrogen oxides, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  5. T59.0X3
    Toxic effect of nitrogen oxides, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. T59.0X4
    Toxic effect of nitrogen oxides, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  7. T59.1
    Toxic effect of sulfur dioxide
    Header
  8. T59.1X
    Toxic effect of sulfur dioxide
    Header
  9. T59.1X1
    Toxic effect of sulfur dioxide, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of sulfur dioxide NOS
  10. T59.1X2
    Toxic effect of sulfur dioxide, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  11. T59.1X3
    Toxic effect of sulfur dioxide, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. T59.1X4
    Toxic effect of sulfur dioxide, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. T59.2
    Toxic effect of formaldehyde
    Header
  14. T59.2X
    Toxic effect of formaldehyde
    Header
  15. T59.2X1
    Toxic effect of formaldehyde, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of formaldehyde NOS
  16. T59.2X2
    Toxic effect of formaldehyde, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  17. T59.2X3
    Toxic effect of formaldehyde, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. T59.2X4
    Toxic effect of formaldehyde, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  19. T59.3
    Toxic effect of lacrimogenic gas
    Header
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of tear gas
  20. T59.3X
    Toxic effect of lacrimogenic gas
    Header
  21. T59.3X1
    Toxic effect of lacrimogenic gas, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of lacrimogenic gas NOS
  22. T59.3X2
    Toxic effect of lacrimogenic gas, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  23. T59.3X3
    Toxic effect of lacrimogenic gas, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  24. T59.3X4
    Toxic effect of lacrimogenic gas, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. T59.4
    Toxic effect of chlorine gas
    Header
  26. T59.4X
    Toxic effect of chlorine gas
    Header
  27. T59.4X1
    Toxic effect of chlorine gas, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of chlorine gas NOS
  28. T59.4X2
    Toxic effect of chlorine gas, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  29. T59.4X3
    Toxic effect of chlorine gas, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  30. T59.4X4
    Toxic effect of chlorine gas, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. T59.5
    Toxic effect of fluorine gas and hydrogen fluoride
    Header
  32. T59.5X
    Toxic effect of fluorine gas and hydrogen fluoride
    Header
  33. T59.5X1
    Toxic effect of fluorine gas and hydrogen fluoride, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of fluorine gas and hydrogen fluoride NOS
  34. T59.5X2
    Toxic effect of fluorine gas and hydrogen fluoride, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  35. T59.5X3
    Toxic effect of fluorine gas and hydrogen fluoride, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  36. T59.5X4
    Toxic effect of fluorine gas and hydrogen fluoride, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  37. T59.6
    Toxic effect of hydrogen sulfide
    Header
  38. T59.6X
    Toxic effect of hydrogen sulfide
    Header
  39. T59.6X1
    Toxic effect of hydrogen sulfide, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of hydrogen sulfide NOS
  40. T59.6X2
    Toxic effect of hydrogen sulfide, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  41. T59.6X3
    Toxic effect of hydrogen sulfide, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  42. T59.6X4
    Toxic effect of hydrogen sulfide, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  43. T59.7
    Toxic effect of carbon dioxide
    Header
  44. T59.7X
    Toxic effect of carbon dioxide
    Header
  45. T59.7X1
    Toxic effect of carbon dioxide, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of carbon dioxide NOS
  46. T59.7X2
    Toxic effect of carbon dioxide, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  47. T59.7X3
    Toxic effect of carbon dioxide, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  48. T59.7X4
    Toxic effect of carbon dioxide, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  49. T59.8
    Toxic effect of other specified gases, fumes and vapors
    Header
  50. T59.81
    Toxic effect of smoke
    Header
    Inclusion terms 1, Excludes2 1

    Inclusion terms

    • Smoke inhalation

    Excludes2

    • toxic effect of cigarette (tobacco) smoke (T65.22-) T65.22
  51. T59.811
    Toxic effect of smoke, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of smoke NOS
  52. T59.812
    Toxic effect of smoke, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  53. T59.813
    Toxic effect of smoke, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  54. T59.814
    Toxic effect of smoke, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  55. T59.82
    Toxic effects of hexamethylene diisocyanate New FY2027
    Header
  56. T59.821
    Toxic effect of hexamethylene diisocyanate, accidental (unintentional) New FY2027 +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effects of hexamethylene diisocyanate NOS
  57. T59.822
    Toxic effect of hexamethylene diisocyanate, intentional self-harm New FY2027 +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  58. T59.823
    Toxic effect of hexamethylene diisocyanate, assault New FY2027 +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  59. T59.824
    Toxic effect of hexamethylene diisocyanate, undetermined New FY2027 +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  60. T59.89
    Toxic effect of other specified gases, fumes and vapors
    Header
  61. T59.891
    Toxic effect of other specified gases, fumes and vapors, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  62. T59.892
    Toxic effect of other specified gases, fumes and vapors, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  63. T59.893
    Toxic effect of other specified gases, fumes and vapors, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  64. T59.894
    Toxic effect of other specified gases, fumes and vapors, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  65. T59.9
    Toxic effect of unspecified gases, fumes and vapors
    Header
  66. T59.91
    Toxic effect of unspecified gases, fumes and vapors, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  67. T59.92
    Toxic effect of unspecified gases, fumes and vapors, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  68. T59.93
    Toxic effect of unspecified gases, fumes and vapors, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  69. T59.94
    Toxic effect of unspecified gases, fumes and vapors, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters

Sources of each column. Rows marked +7th need a 7th character: pick one to build the full code; its code card has its own flags.

Instructions

At T59

Includes

  • aerosol propellants

Excludes1

  • chlorofluorocarbons (T53.5) T53.5

Notes that also apply

Block T51-T65 instructions (Notes 1, Excludes1 1, Use additional code 4): printed on the block page.

Chapter 19 instructions (Notes 2, Excludes2 2, Use additional code 1): printed on the chapter 19 page.

7th characters

7th characters for T59 defined here

The appropriate 7th character is to be added to each code from category T59

7th characters for T59
7thMeaning (NCHS)
Ainitial encounter
Dsubsequent encounter
Ssequela

A code that takes a 7th character is invalid without it; the placeholder X fills a code shorter than 6 characters (Official Guidelines I.A.5). How 7th characters work.

Index entries

  • Vapor asphyxia or suffocation → T59.9
  • Inhalationsmoke → T59.81-
  • Conflagrationasphyxia (by inhalation of gases, fumes or vapors) → T59.9-
  • Effect, adversegases, fumes, or vapors → T59.9-
  • Inhalationgases, fumes, or vapors → T59.9-
  • Inhalationsteam → T59.9-
  • Inhalationgases, fumes, or vaporsspecified agent NEC → T59.89-

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy