DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

F18 Inhalant related disorders

  • Header · not billable

F18 is not billable. The category heads 39 billable codes in FY2027, grouped under 3 subdivisions.

Index → code

  • Use (of)inhalants → F18.90
  • Use (of)volatile solvents → F18.90
  • Inhalant-inducedanxiety disorder → F18.980

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F10-F19 Mental and behavioral disorders due to psychoactive substance use (F10-F19)
  3. F18 Inhalant related disorders
Billable codes
39
Subdivisions
3
CC / MCC codes
16 / 0
HCC V28 codes
37
New FY2027
0
Index entries
87

Codes in F18

  1. F18.1
    Inhalant abuse
    Header
    Excludes1 2

    Excludes1

    • inhalant dependence (F18.2-) F18.2
    • inhalant use, unspecified (F18.9-) F18.9
  2. F18.10
    Inhalant abuse, uncomplicated
    Billable138
    Inclusion terms 1

    Inclusion terms

    • Inhalant use disorder, mild
  3. F18.11
    Inhalant abuse, in remission
    Billable138
    Inclusion terms 2

    Inclusion terms

    • Inhalant use disorder, mild, in early remission
    • Inhalant use disorder, mild, in sustained remission
  4. F18.12
    Inhalant abuse with intoxication
    Header
  5. F18.120
    Inhalant abuse with intoxication, uncomplicated
    Billable137
  6. F18.121
    Inhalant abuse with intoxication delirium
    BillableCC137
  7. F18.129
    Inhalant abuse with intoxication, unspecified
    Billable137
  8. F18.14
    Inhalant abuse with inhalant-induced mood disorder
    Billable137
    Inclusion terms 1

    Inclusion terms

    • Inhalant use disorder, mild, with inhalant induced depressive disorder
  9. F18.15
    Inhalant abuse with inhalant-induced psychotic disorder
    Header
  10. F18.150
    Inhalant abuse with inhalant-induced psychotic disorder with delusions
    BillableCC135
  11. F18.151
    Inhalant abuse with inhalant-induced psychotic disorder with hallucinations
    BillableCC135
  12. F18.159
    Inhalant abuse with inhalant-induced psychotic disorder, unspecified
    Billable135
  13. F18.17
    Inhalant abuse with inhalant-induced dementia
    BillableCC135
    Inclusion terms 1

    Inclusion terms

    • Inhalant use disorder, mild, with inhalant induced major neurocognitive disorder
  14. F18.18
    Inhalant abuse with other inhalant-induced disorders
    Header
  15. F18.180
    Inhalant abuse with inhalant-induced anxiety disorder
    Billable137
  16. F18.188
    Inhalant abuse with other inhalant-induced disorder
    Billable137
    Inclusion terms 1

    Inclusion terms

    • Inhalant use disorder, mild, with inhalant induced mild neurocognitive disorder
  17. F18.19
    Inhalant abuse with unspecified inhalant-induced disorder
    Billable137
  18. F18.2
    Inhalant dependence
    Header
    Excludes1 2

    Excludes1

    • inhalant abuse (F18.1-) F18.1
    • inhalant use, unspecified (F18.9-) F18.9
  19. F18.20
    Inhalant dependence, uncomplicated
    BillableCC137
    Inclusion terms 2

    Inclusion terms

    • Inhalant use disorder, moderate
    • Inhalant use disorder, severe
  20. F18.21
    Inhalant dependence, in remission
    Billable137
    Inclusion terms 4

    Inclusion terms

    • Inhalant use disorder, moderate, in early remission
    • Inhalant use disorder, moderate, in sustained remission
    • Inhalant use disorder, severe, in early remission
    • Inhalant use disorder, severe, in sustained remission
  21. F18.22
    Inhalant dependence with intoxication
    Header
  22. F18.220
    Inhalant dependence with intoxication, uncomplicated
    Billable137
  23. F18.221
    Inhalant dependence with intoxication delirium
    BillableCC137
  24. F18.229
    Inhalant dependence with intoxication, unspecified
    Billable137
  25. F18.24
    Inhalant dependence with inhalant-induced mood disorder
    Billable137
    Inclusion terms 2

    Inclusion terms

    • Inhalant use disorder, moderate, with inhalant induced depressive disorder
    • Inhalant use disorder, severe, with inhalant induced depressive disorder
  26. F18.25
    Inhalant dependence with inhalant-induced psychotic disorder
    Header
  27. F18.250
    Inhalant dependence with inhalant-induced psychotic disorder with delusions
    BillableCC135
  28. F18.251
    Inhalant dependence with inhalant-induced psychotic disorder with hallucinations
    BillableCC135
  29. F18.259
    Inhalant dependence with inhalant-induced psychotic disorder, unspecified
    BillableCC135
  30. F18.27
    Inhalant dependence with inhalant-induced dementia
    BillableCC135
    Inclusion terms 2

    Inclusion terms

    • Inhalant use disorder, moderate, with inhalant induced major neurocognitive disorder
    • Inhalant use disorder, severe, with inhalant induced major neurocognitive disorder
  31. F18.28
    Inhalant dependence with other inhalant-induced disorders
    Header
  32. F18.280
    Inhalant dependence with inhalant-induced anxiety disorder
    BillableCC137
  33. F18.288
    Inhalant dependence with other inhalant-induced disorder
    BillableCC137
    Inclusion terms 2

    Inclusion terms

    • Inhalant use disorder, moderate, with inhalant-induced mild neurocognitive disorder
    • Inhalant use disorder, severe, with inhalant-induced mild neurocognitive disorder
  34. F18.29
    Inhalant dependence with unspecified inhalant-induced disorder
    Billable137
  35. F18.9
    Inhalant use, unspecified
    Header
    Excludes1 2

    Excludes1

    • inhalant abuse (F18.1-) F18.1
    • inhalant dependence (F18.2-) F18.2
  36. F18.90
    Inhalant use, unspecified, uncomplicated
    Billable
  37. F18.91
    Inhalant use, unspecified, in remission
    Billable
  38. F18.92
    Inhalant use, unspecified with intoxication
    Header
  39. F18.920
    Inhalant use, unspecified with intoxication, uncomplicated
    Billable137
  40. F18.921
    Inhalant use, unspecified with intoxication with delirium
    BillableCC137
  41. F18.929
    Inhalant use, unspecified with intoxication, unspecified
    Billable137
  42. F18.94
    Inhalant use, unspecified with inhalant-induced mood disorder
    Billable137
    Inclusion terms 1

    Inclusion terms

    • Inhalant induced depressive disorder
  43. F18.95
    Inhalant use, unspecified with inhalant-induced psychotic disorder
    Header
  44. F18.950
    Inhalant use, unspecified with inhalant-induced psychotic disorder with delusions
    BillableCC135
  45. F18.951
    Inhalant use, unspecified with inhalant-induced psychotic disorder with hallucinations
    BillableCC135
  46. F18.959
    Inhalant use, unspecified with inhalant-induced psychotic disorder, unspecified
    Billable135
  47. F18.97
    Inhalant use, unspecified with inhalant-induced persisting dementia
    BillableCC135
    Inclusion terms 1

    Inclusion terms

    • Inhalant-induced major neurocognitive disorder
  48. F18.98
    Inhalant use, unspecified with other inhalant-induced disorders
    Header
  49. F18.980
    Inhalant use, unspecified with inhalant-induced anxiety disorder
    Billable137
  50. F18.988
    Inhalant use, unspecified with other inhalant-induced disorder
    Billable137
    Inclusion terms 1

    Inclusion terms

    • Inhalant-induced mild neurocognitive disorder
  51. F18.99
    Inhalant use, unspecified with unspecified inhalant-induced disorder
    Billable137

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At F18

Includes

  • volatile solvents

Notes that also apply

Chapter 5 instructions (Includes 1, Excludes2 1): printed on the chapter 5 page.

Index entries

  • Use (of)inhalants → F18.90
  • Use (of)volatile solvents → F18.90
  • Inhalant-induceddepressive disorder → F18.94
  • Inhalant-inducedpsychotic disorder → F18.959
  • Inhalant-inducedmajor neurocognitive disorder → F18.97
  • Inhalant-inducedanxiety disorder → F18.980
  • Inhalant-inducedmild neurocognitive disorder → F18.988
  • Abusedrug NEC (non-dependent)inhalant → F18.10
  • Disorder (of)inhalant usemild → F18.10
  • Dependence (on) (syndrome)drug NECinhalant → F18.20
  • Disorder (of)inhalant usemoderate or severe → F18.20
  • Use (of)inhalantsin remission → F18.91
  • Delirium, delirious (acute or subacute) (not alcohol- or drug-induced)due to (secondary to)inhalant intoxication (acute) → F18.921
  • Hallucinosis (chronic)drug-inducedinhalant → F18.951
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)inhalants → F18.97
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)volatile solvents → F18.97
  • Abusedrug NEC (non-dependent)inhalantin remission (early) (sustained) → F18.11
  • Disorder (of)inhalant usemildin remission (early) (sustained) → F18.11
  • Dependence (on) (syndrome)drug NECinhalantin remission → F18.21
  • Disorder (of)inhalant usemoderate or severein remission (early) (sustained) → F18.21
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)inhalantswith dependence → F18.27
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)volatile solventswith dependence → F18.27
  • Use (of)inhalantswithintoxication → F18.929
  • Disorder (of)mooddue to (secondary to)inhalant → F18.94
  • Disorder (of)mooddue to (secondary to)volatile solvents → F18.94
  • Use (of)inhalantswithmood disorder → F18.94
  • Use (of)inhalantswithpsychosis → F18.959
  • Dementia (degenerative (primary)) (persisting) (unspecified severity) (without behavioral disturbance, psychotic disturbance, mood disturbance, and anxiety)in (due to)psychoactive druginhalants → F18.97
  • Use (of)inhalantswithpersisting dementia → F18.97
  • Disorder (of)anxietydue to (secondary to)inhalant → F18.980
  • Disorder (of)anxietydue to (secondary to)volatile solvents → F18.980
  • Use (of)inhalantswithanxiety disorder → F18.980
  • Use (of)inhalantswithother specified disorder → F18.988
  • Use (of)inhalantswithunspecified disorder → F18.99
  • Delirium, delirious (acute or subacute) (not alcohol- or drug-induced)due to (secondary to)inhalant intoxication (acute)inabuse → F18.121
  • Disorder (of)inhalant usemildwithinhalant intoxication delirium → F18.121
  • Abusedrug NEC (non-dependent)inhalantwithintoxication → F18.129
  • Disorder (of)inhalant usemildwithinhalant intoxication → F18.129
  • Abusedrug NEC (non-dependent)inhalantwithmood disorder → F18.14
  • Hallucinosis (chronic)drug-inducedinabuseinhalant → F18.151

47 more, longer entries are not listed; the search box finds them by word.

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

Hierarchy