DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

F06 Other mental disorders due to known physiological condition

  • Header · not billable

F06 is not billable. The category heads 12 billable codes in FY2027, grouped under 7 subdivisions.

Index → code

  • Psychotic episode due to or associated with physical condition → F06.8
  • Deteriorationepileptic → F06.8
  • Disorder (of)catatonic NOS → F06.1

Where it sits

  1. Chapter 5 Mental, Behavioral and Neurodevelopmental disorders (F01-F99)
  2. F01-F09 Mental disorders due to known physiological conditions (F01-F09)
  3. F06 Other mental disorders due to known physiological condition
Billable codes
12
Subdivisions
7
CC / MCC codes
3 / 0
HCC V28 codes
0
New FY2027
0
Index entries
76

Codes in F06

  1. F06.0
    Psychotic disorder with hallucinations due to known physiological condition
    BillableCC
    Inclusion terms 1, Excludes2 2

    Inclusion terms

    • Organic hallucinatory state (nonalcoholic)

    Excludes2

    • hallucinations and perceptual disturbance induced by alcohol and other psychoactive substances (F10-F19 with .151, .251, .951) F10 F19
    • schizophrenia (F20.-) F20
  2. F06.1
    Catatonic disorder due to known physiological condition
    Billable
    Inclusion terms 2, Excludes1 2, Excludes2 2

    Inclusion terms

    • Catatonia associated with another mental disorder
    • Catatonia NOS

    Excludes1

    • catatonic stupor (R40.1) R40.1
    • stupor NOS (R40.1) R40.1

    Excludes2

    • catatonic schizophrenia (F20.2) F20.2
    • dissociative stupor (F44.2) F44.2
  3. F06.2
    Psychotic disorder with delusions due to known physiological condition
    BillableCC
    Inclusion terms 2, Excludes2 4

    Inclusion terms

    • Paranoid and paranoid-hallucinatory organic states
    • Schizophrenia-like psychosis in epilepsy

    Excludes2

    • alcohol and drug-induced psychotic disorder (F10-F19 with .150, .250, .950) F10 F19
    • brief psychotic disorder (F23) F23
    • delusional disorder (F22) F22
    • schizophrenia (F20.-) F20
  4. F06.3
    Mood disorder due to known physiological condition
    Header
    Excludes2 2

    Excludes2

    • mood disorders due to alcohol and other psychoactive substances (F10-F19 with .14, .24, .94) F10 F19
    • mood disorders, not due to known physiological condition or unspecified (F30-F39) F30 F39
  5. F06.30
    Mood disorder due to known physiological condition, unspecified
    Billable
  6. F06.31
    Mood disorder due to known physiological condition with depressive features
    Billable
    Inclusion terms 1

    Inclusion terms

    • Depressive disorder due to known physiological condition, with depressive features
  7. F06.32
    Mood disorder due to known physiological condition with major depressive-like episode
    Billable
    Inclusion terms 1

    Inclusion terms

    • Depressive disorder due to known physiological condition, with major depressive-like episode
  8. F06.33
    Mood disorder due to known physiological condition with manic features
    Billable
    Inclusion terms 2

    Inclusion terms

    • Bipolar and related disorder due to a known physiological condition, with manic features
    • Bipolar and related disorder due to known physiological condition, with manic- or hypomanic-like episodes
  9. F06.34
    Mood disorder due to known physiological condition with mixed features
    Billable
    Inclusion terms 2

    Inclusion terms

    • Bipolar and related disorder due to known physiological condition, with mixed features
    • Depressive disorder due to known physiological condition, with mixed features
  10. F06.4
    Anxiety disorder due to known physiological condition
    Billable
    Excludes2 2

    Excludes2

    • anxiety disorders due to alcohol and other psychoactive substances (F10-F19 with .180, .280, .980) F10 F19
    • anxiety disorders, not due to known physiological condition or unspecified (F40.-, F41.-) F40 F41
  11. F06.7
    Mild neurocognitive disorder due to known physiological condition
    Header
    Inclusion terms 1, Excludes1 9, Code first 10

    Inclusion terms

    • Mild neurocognitive impairment due to a known physiological condition

    Excludes1

    • age related cognitive decline (R41.81) R41.81
    • altered mental status (R41.82) R41.82
    • cerebral degeneration (G31.9) G31.9
    • change in mental status (R41.82) R41.82
    • cognitive deficits following (sequelae of) cerebral hemorrhage or infarction (I69.01-I69.11-, I69.21-I69.31-, I69.81- I69.91-) I69.01 I69.11 I69.21 I69.31 I69.81 I69.91
    • dementia (F01.-, F02.-, F03.-) F01 F02 F03
    • mild cognitive impairment due to unknown or unspecified etiology (G31.84) G31.84
    • neurologic neglect syndrome (R41.4) R41.4
    • personality change, nonpsychotic (F68.8) F68.8

    Code first

    • the underlying physiological condition, such as:
    • Alzheimer's disease (G30.-) G30
    • human immunodeficiency virus [HIV] disease (B20) B20
    • Huntington's disease (G10) G10
    • Neurocognitive disorder with Lewy bodies (G31.83) G31.83
    • other frontotemporal neurocognitive disorder (G31.09) G31.09
    • Parkinson's disease (G20.-) G20
    • systemic lupus erythematosus (M32.-) M32
    • traumatic brain injury (S06.-) S06
    • vitamin B deficiency (E53.-) E53
  12. F06.70
    Mild neurocognitive disorder due to known physiological condition without behavioral disturbance
    Billable
    Inclusion terms 1

    Inclusion terms

    • Mild neurocognitive disorder due to known physiological condition, NOS
  13. F06.71
    Mild neurocognitive disorder due to known physiological condition with behavioral disturbance
    BillableCC
  14. F06.8
    Other specified mental disorders due to known physiological condition
    Billable
    Inclusion terms 4

    Inclusion terms

    • Epileptic psychosis NOS
    • Obsessive-compulsive and related disorder due to a known physiological condition
    • Organic dissociative disorder
    • Organic emotionally labile [asthenic] disorder

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 F06

Includes

  • mental disorders due to endocrine disorder
  • mental disorders due to exogenous hormone
  • mental disorders due to exogenous toxic substance
  • mental disorders due to primary cerebral disease
  • mental disorders due to somatic illness
  • mental disorders due to systemic disease affecting the brain

Excludes1

  • unspecified dementia (F03.-) F03

Excludes2

  • delirium due to known physiological condition (F05) F05
  • dementia as classified in F01-F02 F01 F02
  • other mental disorders associated with alcohol and other psychoactive substances (F10-F19) F10 F19

Code first

  • the underlying physiological condition

Notes that also apply

Block F01-F09 instructions (Notes 1): printed on the block page.

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

Index entries

  • Psychotic episode due to or associated with physical condition → F06.8
  • Hallucinosis (chronic)organic → F06.0
  • Catatonicdisorder due to known physiologic condition → F06.1
  • Disorder (of)catatonia (due to known physiological condition) (with another mental disorder) → F06.1
  • Disorder (of)catatonic NOS → F06.1
  • Psychosis, psychoticschizophrenia-like, in epilepsy → F06.2
  • Deteriorationepileptic → F06.8
  • Epilepsy, epileptic, epilepsia (attack) (cerebral) (convulsion) (fit) (seizure)deterioration (mental) → F06.8
  • Memory disturbance, lack or lossmild, following organic brain damage → F06.8
  • Psychosis, psychoticepileptic → F06.8
  • State (of)affective and paranoid, mixed, organic psychotic → F06.8
  • State (of)transient organic psychotic NEC → F06.8
  • State (of)organichallucinatory (nonalcoholic) → F06.0
  • State (of)transient organic psychotic NEChallucinatory type → F06.0
  • Syndromeorganichallucinosis → F06.0
  • Syndromepsycho-organic (nonpsychotic severity)hallucinatory type → F06.0
  • Disorder (of)catatonic NOSdue to (secondary to) known physiological condition → F06.1
  • Disorder (of)catatonic NOSorganic NOS → F06.1
  • Disorder (of)organiccatatonic NOS → F06.1
  • Disorder (of)organicdelusional → F06.2
  • Disorder (of)organicschizophrenia-like → F06.2
  • State (of)organicparanoid (-hallucinatory) → F06.2
  • State (of)paranoidorganic → F06.2
  • Disorder (of)bipolar (I) (seasonal) (type 1)organic → F06.30
  • Disorder (of)moodorganic → F06.30
  • Disorder (of)organicmood (affective) → F06.30
  • Syndromeorganicaffective → F06.30
  • Disorder (of)depressiveorganic → F06.31
  • State (of)transient organic psychotic NECdepressive type → F06.31
  • Syndromeorganicdepressive → F06.31
  • Syndromepsycho-organic (nonpsychotic severity)depressive type → F06.31
  • Disorder (of)manicorganic → F06.33
  • Disorder (of)anxietyorganic → F06.4
  • Disorder (of)organicanxiety → F06.4
  • Disorder (of)mild neurocognitivedue to known physiological condition (without behavioral disturbance) → F06.70
  • Impaired, impairment (function)mild neurocognitivedue to known physiological condition (without behavioral disturbance) → F06.70
  • Disorder (of)dissociativedue to (secondary to) general medical condition → F06.8
  • Disorder (of)dissociativeorganic → F06.8
  • Disorder (of)obsessive-compulsiveand related disorder due to a known physiological condition → F06.8
  • Disorder (of)organicdissociative → F06.8

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

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

Hierarchy