ICD-11 code : 6B80;
Preferred Label : Anorexia Nervosa;
ICD-11 definition : Anorexia Nervosa is characterised by significantly low body weight for the individual's
height, age and developmental stage that is not due to another health condition or
to the unavailability of food. A commonly used threshold is body mass index (BMI)
less than 18.5 kg/m² in adults and BMI-for-age under 5th percentile in children and
adolescents. Rapid weight loss (e.g. more than 20% of total body weight within 6 months)
may replace the low body weight guideline as long as other diagnostic requirements
are met. Children and adolescents may exhibit failure to gain weight as expected based
on the individual developmental trajectory rather than weight loss. Low body weight
is accompanied by a persistent pattern of behaviours to prevent restoration of normal
weight, which may include behaviours aimed at reducing energy intake (restricted eating),
purging behaviours (e.g. self-induced vomiting, misuse of laxatives), and behaviours
aimed at increasing energy expenditure (e.g. excessive exercise), typically associated
with a fear of weight gain. Low body weight or shape is central to the person's self-evaluation
or is inaccurately perceived to be normal or even excessive.;
ICD-11 synonym : AN - [anorexia nervosa];
ICD-11 acronym : AN;
ICD-11 "other" category code : 6B80.Y;
ICD-11 "unspecified" category code : 6B80.Z;
Origin ID : 263852475;
UMLS CUI : C0013473;
Automatic exact mappings (from CISMeF team)
- Currated CISMeF NLP mapping
- ICD-10 Mapping
- Semantic type(s)
- UMLS correspondences (same concept)
Anorexia Nervosa is characterised by significantly low body weight for the individual's
height, age and developmental stage that is not due to another health condition or
to the unavailability of food. A commonly used threshold is body mass index (BMI)
less than 18.5 kg/m² in adults and BMI-for-age under 5th percentile in children and
adolescents. Rapid weight loss (e.g. more than 20% of total body weight within 6 months)
may replace the low body weight guideline as long as other diagnostic requirements
are met. Children and adolescents may exhibit failure to gain weight as expected based
on the individual developmental trajectory rather than weight loss. Low body weight
is accompanied by a persistent pattern of behaviours to prevent restoration of normal
weight, which may include behaviours aimed at reducing energy intake (restricted eating),
purging behaviours (e.g. self-induced vomiting, misuse of laxatives), and behaviours
aimed at increasing energy expenditure (e.g. excessive exercise), typically associated
with a fear of weight gain. Low body weight or shape is central to the person's self-evaluation
or is inaccurately perceived to be normal or even excessive.
