DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

T51 Toxic effect of alcohol

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

T51 is not billable. The category heads 72 billable codes in FY2027, grouped under 6 subdivisions. Its codes take a 7th character, so none is complete with fewer than 7 characters.

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. T51 Toxic effect of alcohol
Billable codes
72
Subdivisions
6
CC / MCC codes
0 / 0
HCC V28 codes
6
New FY2027
0
Index entries
0

Codes in T51

  1. T51.0
    Toxic effect of ethanol
    Header
    Inclusion terms 1, Excludes2 3

    Inclusion terms

    • Toxic effect of ethyl alcohol

    Excludes2

  2. T51.0X
    Toxic effect of ethanol
    Header
  3. T51.0X1
    Toxic effect of ethanol, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of ethanol NOS
  4. T51.0X2
    Toxic effect of ethanol, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  5. T51.0X3
    Toxic effect of ethanol, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  6. T51.0X4
    Toxic effect of ethanol, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  7. T51.1
    Toxic effect of methanol
    Header
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of methyl alcohol
  8. T51.1X
    Toxic effect of methanol
    Header
  9. T51.1X1
    Toxic effect of methanol, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of methanol NOS
  10. T51.1X2
    Toxic effect of methanol, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  11. T51.1X3
    Toxic effect of methanol, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  12. T51.1X4
    Toxic effect of methanol, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  13. T51.2
    Toxic effect of 2-Propanol
    Header
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of isopropyl alcohol
  14. T51.2X
    Toxic effect of 2-Propanol
    Header
  15. T51.2X1
    Toxic effect of 2-Propanol, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of 2-Propanol NOS
  16. T51.2X2
    Toxic effect of 2-Propanol, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  17. T51.2X3
    Toxic effect of 2-Propanol, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  18. T51.2X4
    Toxic effect of 2-Propanol, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  19. T51.3
    Toxic effect of fusel oil
    Header
    Inclusion terms 3

    Inclusion terms

    • Toxic effect of amyl alcohol
    • Toxic effect of butyl [1-butanol] alcohol
    • Toxic effect of propyl [1-propanol] alcohol
  20. T51.3X
    Toxic effect of fusel oil
    Header
  21. T51.3X1
    Toxic effect of fusel oil, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of fusel oil NOS
  22. T51.3X2
    Toxic effect of fusel oil, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  23. T51.3X3
    Toxic effect of fusel oil, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  24. T51.3X4
    Toxic effect of fusel oil, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  25. T51.8
    Toxic effect of other alcohols
    Header
  26. T51.8X
    Toxic effect of other alcohols
    Header
  27. T51.8X1
    Toxic effect of other alcohols, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
    Inclusion terms 1

    Inclusion terms

    • Toxic effect of other alcohols NOS
  28. T51.8X2
    Toxic effect of other alcohols, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  29. T51.8X3
    Toxic effect of other alcohols, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  30. T51.8X4
    Toxic effect of other alcohols, undetermined +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  31. T51.9
    Toxic effect of unspecified alcohol
    Header
  32. T51.91
    Toxic effect of unspecified alcohol, accidental (unintentional) +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  33. T51.92
    Toxic effect of unspecified alcohol, intentional self-harm +7th: A D S
    Needs 7th character155 (some 7th characters)Exempt: 2 of 3 7th characters
  34. T51.93
    Toxic effect of unspecified alcohol, assault +7th: A D S
    Needs 7th characterExempt: 2 of 3 7th characters
  35. T51.94
    Toxic effect of unspecified alcohol, 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

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 T51 defined here

The appropriate 7th character is to be added to each code from category T51

7th characters for T51
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.

Hierarchy