ICD-10 Codes for Mental Disorders

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F00-F09Organic, including symptomatic, mental disorders.
F10-F19 Mental and behavioral disorders due to psychoactive substance abuse.
F20-F29Schizophrenia, schizotypal and delusional disorders.
F30-F39 Mood (affective) disorders.
F40-F48Neurotic, stress-related and somatoform disorders.
F50-F59Behavioral syndromes associated with physiological disturbances and physical factors
F60-F69 Disorders of adult personality and behavior
F70-F79Mental retardation
F80-F89Disorders of psychological development
F90-F98 Behavioral emotional disorders with onset usually occurring in childhood or adolescence

ICD-10 codes consist of a single letter followed by 3 or more digits, with a decimal point between the second and third ( e.g K35.1, "Acute Appendicitis with peritoneal abscess" ). As there are many thousands of variations at the 4 character level - where all three digits are used - it is common practice to summarize at the 3 character level ( e.g. K35, "Acute appendicitis", which includes peritoneal abscess and all other forms of the condition ).

The diagnoses are presented in code order ( i.e. rather than by the diagnosis name ). The list of ICD-10 chapters below should help you locate the particular diagnosis you require from these tables:

Codes:

A and BCertain infectious and parasitic diseases.
C00 to D48Neoplasms.
D50 to D89Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanism.
EEndocrine, nutritional and metabolic diseases.
FMental and behavioral disorders.
GDiseases of the nervous system.
H00 to H59Diseases of the eye and adnexa.
H60 to H95Diseases of the ear and mastoid process.
IDiseases of the circulatory system.
JDiseases of the respiratory system.
KDiseases of the digestive system.
LDiseases of the skin and subcutaneous tissue.
MDiseases of the musculoskeletal system and connective tissue.
NDiseases of the genitourinary system.
OPregnancy, childbirth and the puerperium.
PCertain conditions originating in the perinatal period.
QCongenital malformations, deformations and chromosomal abnormalities.
RSymptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified.
S and TInjury, poisoning and certain other consequences of external causes.
UThis letter is currently left vacant.
V, W, X and YExternal causes of morbidity and mortality.
ZFactors influencing health status and contact with health services.

 
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