6B80.0Level 4
Anorexia Nervosa with significantly low body weight
**Definition:** Anorexia Nervosa with significantly low body weight meets all definitional requirements for Anorexia Nervosa, with BMI between 18.5 kg/m2 and 14.0 kg/m² for adults or between the fifth percentile and the 0.3 percentile for BMI-for-age in children and adolescents.
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