ICD-10 Chapter V: Mental and behavioural disorders

This is a shortened version of fifth chapter of the ICD-10: Mental and behavioural disorders. It covers ICD codes F00 to F99. All versions of the ICD-10, including the most recent one (2019), can be browsed freely on the website of the World Health Organisation (WHO). The ICD-10 can also be downloaded in PDF-form.

ICD-10 chapters
Chapter Block Title
I A00–B99 Certain infectious and parasitic diseases
II C00–D48 Neoplasms
III D50–D89 Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism
IV E00–E90 Endocrine, nutritional and metabolic diseases
V F00–F99 Mental and behavioural disorders
VI G00–G99 Diseases of the nervous system
VII H00–H59 Diseases of the eye and adnexa
VIII H60–H95 Diseases of the ear and mastoid process
IX I00–I99 Diseases of the circulatory system
X J00–J99 Diseases of the respiratory system
XI K00–K93 Diseases of the digestive system
XII L00–L99 Diseases of the skin and subcutaneous tissue
XIII M00–M99 Diseases of the musculoskeletal system and connective tissue
XIV N00–N99 Diseases of the genitourinary system
XV O00–O99 Pregnancy, childbirth and the puerperium
XVI P00–P96 Certain conditions originating in the perinatal period
XVII Q00–Q99 Congenital malformations, deformations and chromosomal abnormalities
XVIII R00–R99 Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified
XIX S00–T98 Injury, poisoning and certain other consequences of external causes
XX V01–Y98 External causes of morbidity and mortality
XXI Z00–Z99 Factors influencing health status and contact with health services
XXII U00–U99 Codes for special purposes

The WHO has made its classification of mental disorders available in three publications. The first is Chapter V of the ICD-10, which features short summaries of mental disorders, and is intended as a quick reference point. The second is the Clinical descriptions and diagnostic guidelines (CDDG), or the "Blue Book", which is for clinical and educational use. It features longer definitions of mental disorders, along with diagnostic criteria and guidelines. The third is the Diagnostic criteria for research (DCR or DCR-10), or the "Green Book", which is intended for research purposes, and to be used in conjunction with the Blue Book. As with the rest of the ICD-10, both books can be downloaded for free from the website of the WHO.

The codes of this chapter are used by the fifth, most recent version of the Diagnostic and Statistical Manual of Mental Disorders, or DSM-5, which is the primary system for diagnosing mental disorders in the world. The ICD-10 system is used to code these disorders, and strictly seen, the ICD has always been the official system of diagnosing mental diseases in the United States. Due to the dominance of the DSM, however, not even many professionals within psychiatry realize this.[1] The DSM and the ICD form a "dual-system": the DSM is used for diagnostic criteria while the ICD-codes are used for reimbursement claims towards the health insurance companies. The CDDG (Blue Book) also contains diagnostic criteria but for the most part therapists use those in the DSM. This structure has been criticized, with people wondering why there should be two separate systems for the classification of mental disorders. It has been proposed that the ICD supersede the DSM.[2]

Organic, including symptomatic, mental disorders (F00–F09)

Mental and behavioural disorders due to psychoactive substance use (F10–F19)

Schizophrenia, schizotypal and delusional disorders (F20–F29)

Mood (affective) disorders (F30–F39)
  • F30 Manic episode
  • F31 Bipolar affective disorder
    • F31.0 Bipolar affective disorder, current episode hypomanic
    • F31.1 Bipolar affective disorder, current episode manic without psychotic symptoms
    • F31.2 Bipolar affective disorder, current episode manic with psychotic symptoms
    • F31.3 Bipolar affective disorder, current episode mild or moderate depression
    • F31.4 Bipolar affective disorder, current episode severe depression without psychotic symptoms
    • F31.5 Bipolar affective disorder, current episode severe depression with psychotic symptoms
    • F31.6 Bipolar affective disorder, current episode mixed
    • F31.7 Bipolar affective disorder, currently in remission
    • F31.8 Other bipolar affective disorders
    • F31.9 Bipolar affective disorder, unspecified
  • F32 Depressive episode
  • F33 Recurrent depressive disorder
    • F33.0 Recurrent depressive disorder, current episode mild
    • F33.1 Recurrent depressive disorder, current episode moderate
    • F33.2 Recurrent depressive disorder, current episode severe without psychotic symptoms
    • F33.3 Recurrent depressive disorder, current episode severe with psychotic symptoms
    • F33.4 Recurrent depressive disorder, currently in remission
    • F33.8 Other recurrent depressive disorders
    • F33.9 Recurrent depressive disorder, unspecified
  • F34 Persistent mood (affective) disorders
  • F38 Other mood (affective) disorders
    • F38.0 Other single mood (affective) disorders
      • Mixed affective episode
    • F38.1 Other recurrent mood (affective) disorders
      • Recurrent brief depressive episodes
    • F38.8 Other specified mood (affective) disorders
  • F39 Unspecified mood (affective) disorder

Behavioural syndromes associated with physiological disturbances and physical factors (F50–F59)

Disorders of adult personality and behaviour (F60–F69)

Mental retardation (F70–F79)
  • F70 Mild mental retardation
  • F71 Moderate mental retardation
  • F72 Severe mental retardation
  • F73 Profound mental retardation
  • F78 Other mental retardation
  • F79 Unspecified mental retardation

Disorders of psychological development (F80–F89)

Behavioural and emotional disorders with onset usually occurring in childhood and adolescence (F90–F98)

Unspecified mental disorder (F99)
  • F99 Mental disorder, not otherwise specified

See also

References
  1. Reed, Geoffrey M. (2010). "Toward ICD-11: Improving the clinical utility of WHO's International Classification of mental disorders" (PDF). Professional Psychology: Research and Practice. 41 (6): 457–464. doi:10.1037/a0021701. Archived from the original (PDF) on 12 December 2017.
  2. "ICD vs. DSM". Monitor on Psychology. APA. 40 (9): 63. Archived from the original on 6 August 2019.
  3. Cochran, Susan D.; Drescher, Jack; Kismödi, Eszter; Giami, Alain; García-Moreno, Claudia; Atalla, Elham; Marais, Adele; Meloni Vieira, Elisabeth; Reed, Geoffrey M. (2014). "Proposed declassification of disease categories related to sexual orientation in the International Statistical Classification of Diseases and Related Health Problems (ICD-11)". Bulletin of the World Health Organization. 92 (9): 672–679. doi:10.2471/BLT.14.135541. PMC 4208576. PMID 25378758.
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