ICD-11 Codes for Mental, Behavioral, and Neurodevelopmental Disorders

How to Read ICD-11 Codes

ICD-11 codes in Chapter 6 begin with the number 6. The characters that follow identify the diagnostic block and category. For example, 6A20 is the code for schizophrenia, while 6A70 is the code for single episode depressive disorder. In ICD-10, these disorders were generally identified by codes beginning with the letter F, such as F20 for schizophrenia and F32 for depressive disorders.

Additional characters after the decimal point provide more specific information about a diagnosis, such as its severity, course, or clinical presentation. A final Y indicates an “other specified” category, while Z indicates an “unspecified” category. The individual subcodes are explained in more detail on the pages linked from the tables.

For the opposite direction, from an F code to its ICD-11 equivalent, see our ICD-10 to ICD-11 mapping table. The ICD-10 column lists the closest corresponding ICD-10 code when there is a clear equivalent. The two classification systems do not always map directly onto each other. Some ICD-11 diagnoses combine categories that were previously separate, while others divide an ICD-10 category into several distinct diagnoses. ICD-11 also introduced diagnoses that did not have a direct equivalent in ICD-10, including complex post-traumatic stress disorder and gaming disorder. When there is no clear ICD-10 equivalent, the table shows a dash (–).

For a broader overview of the changes between the two classification systems, see ICD-10 vs. ICD-11 – Key Differences.

Neurodevelopmental disorders 6A00–6A0Z

Schizophrenia or other primary psychotic disorders 6A20–6A2Z

Catatonia 6A40–6A4Z

Mood disorders 6A60–6A8Z

Anxiety or fear-related disorders 6B00–6B0Z

Obsessive-compulsive or related disorders 6B20–6B2Z

Disorders specifically associated with stress 6B40–6B4Z

Dissociative disorders 6B60–6B6Z

Feeding or eating disorders 6B80–6B8Z

Elimination disorders 6C00–6C0Z

Disorders of bodily distress or bodily experience 6C20–6C2Z

Disorders due to substance use or addictive behaviors 6C40–6C5Z

Impulse control disorders 6C70–6C7Z

Disruptive behaviour or dissocial disorders 6C90–6C9Z

Personality disorders and related traits 6D10–6D11

Paraphilic disorders 6D30–6D3Z

Factitious disorders 6D50–6D5Z

Neurocognitive disorders 6D70–6E0Z

Mental or behavioural disorders associated with pregnancy, childbirth or the puerperium 6E20–6E2Z

Secondary mental or behavioural syndromes associated with disorders or diseases classified elsewhere 6E60–6E6Z

Other chapter 6 categories

Frequently Asked Questions