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ICD-10-CM · F50.00GeneralSystemic

Anorexia Nervosa

Anorexia Nervosa (Anorexia) clinical documentation and medical coding guidelines for healthcare professionals. Find information on Anorexia Nervosa Restricting Type and Anorexia Nervosa Binge/Purge Type diagnosis, including ICD-10 codes, DSM-5 criteria, and best practices for accurate medical record keeping. This resource supports comprehensive and compliant healthcare documentation for Anorexia and its subtypes.

Also known as
AnorexiaAnorexia Nervosa Restricting TypeAnorexia Nervosa Binge/Purge Type
Definition

Eating disorder characterized by low body weight, fear of weight gain, and distorted body image.

Clinical signs

Extreme weight loss, restrictive eating, amenorrhea, bradycardia, electrolyte imbalances.

Common settings

Inpatient hospitalization, residential treatment, outpatient therapy, nutritional counseling.

Related Codes

ICD-10 Code Families

Complete code families applicable to F50.00

F50.0-F50.9
Eating disorders
F50.8
Other eating disorders
R63.0
Anorexia
Z73.1
Dietary counseling and surveillance
Code Comparison

When to use each related code

DescriptionWhen to use
Eating disorder with extreme weight loss fear.Significant weight loss from restricting food. Fear of weight gain. Distorted body image.
Binge eating followed by purging behaviors.Recurrent episodes of binge eating and compensatory behaviors (vomiting, laxatives, etc.) to prevent weight gain.
Eating large amounts of food without purging.Recurrent binge eating episodes. Feeling loss of control during binges. No regular compensatory behaviors.
Documentation

Best-practice checklist

  • Anorexia Nervosa diagnosis documentation: DSM-5 criteria, ICD-10 F50.0
  • Body weight and BMI significantly below expected
  • Intense fear of weight gain or becoming fat
  • Distorted body image, undue influence of weight on self-evaluation
  • Restricting type: dieting, fasting, excessive exercise documented
  • Binge-purge type: compensatory behaviors (vomiting, laxatives) details
Coding & Audit Risks

Common pitfalls to avoid

Unspecified Anorexia

Coding Anorexia Nervosa without specifying subtype (restricting or binge/purge) when clinically documented, leading to inaccurate severity reflection.

Missed Comorbidities

Overlooking common co-occurring conditions like anxiety, depression, or electrolyte imbalances, impacting reimbursement and quality metrics.

BMI Documentation

Insufficient documentation of BMI and weight loss trajectory, hindering accurate code assignment and severity determination for Anorexia Nervosa.

Mitigation

Best-practice tips

  • 01ICD-10 F50.0, F50.1: Document BMI, medical complications for CDI.
  • 02Anorexia Nervosa: Screen for comorbidities, document mental status.
  • 03Care plan: Nutritional counseling, weight restoration monitoring, FBT.
  • 04Compliance: Multidisciplinary team approach, document family involvement.
  • 05Therapy: CBT, DBT for emotion regulation, body image distortion.
Clinical Decision Support

Step-by-step checklist

  1. 1

    Verify BMI < 18.5 kg/m2 ICD-10 F50.0x, Document meticulously

  2. 2

    Assess for intense fear of weight gain, patient interview crucial

  3. 3

    Distorted body image? Cognitive behavioral therapy referral?

  4. 4

    Amenorrhea? Document duration, relevant labs F50.01/F50.02

  5. 5

    Restricting or binge/purge subtype? Specify for accurate coding

Documentation Template

Ready-to-paste narrative

Patient presents with symptoms consistent with a diagnosis of Anorexia Nervosa, characterized by significantly low body weight in the context of age, sex, developmental trajectory, and physical health.  The patient exhibits an intense fear of gaining weight or becoming fat, even though underweight.  Distorted body image is evident, with undue influence of body weight or shape on self-evaluation, or persistent lack of recognition of the seriousness of the current low body weight.  Differential diagnosis considered atypical anorexia nervosa, bulimia nervosa, avoidant restrictive food intake disorder ARFID, and medical conditions such as gastrointestinal issues, hyperthyroidism, and malignancy.  Assessment includes a detailed history focusing on eating patterns, weight history, body image concerns, exercise habits, menstrual history in females, and comorbid psychiatric conditions such as anxiety, depression, and obsessive-compulsive disorder.  Physical examination includes evaluation of BMI, vital signs, and assessment for signs of malnutrition including lanugo, dry skin, bradycardia, and hypotension.  Laboratory tests may be ordered to assess electrolyte imbalances, complete blood count, and thyroid function.  Treatment plan includes medical stabilization if necessary, nutritional rehabilitation to restore healthy weight, and psychotherapy, specifically Cognitive Behavioral Therapy CBT and family-based therapy FBT.  Patient education on healthy eating habits, weight restoration, and the dangers of low body weight is essential.  Prognosis depends on early diagnosis, patient motivation, and adherence to the treatment plan.  ICD-10 code F50.0 may be appropriate based on the specific subtype anorexia nervosa restricting type or anorexia nervosa binge-purge type, and further assessment.  Follow-up appointments are scheduled for monitoring progress and adjusting treatment as needed.  Referral to a registered dietitian and mental health specialist is recommended for comprehensive care.
FAQs

Common questions and answers

What are the most effective evidence-based treatment strategies for Anorexia Nervosa in adolescents?+

Treating adolescent Anorexia Nervosa requires a multidisciplinary approach encompassing medical stabilization, nutritional rehabilitation, and psychotherapy. Family-based therapy (FBT) is considered the first-line treatment for adolescents, with strong evidence supporting its efficacy in restoring weight and improving psychological functioning. Cognitive Behavioral Therapy (CBT) and Dialectical Behavior Therapy (DBT) adapted for anorexia can also be beneficial, particularly for older adolescents or those with co-occurring conditions. Medical monitoring is crucial to address potential complications like bradycardia and electrolyte imbalances. Explore how integrated care models can optimize treatment outcomes for young people with Anorexia Nervosa.

How can clinicians differentiate between Anorexia Nervosa Restricting Type and Anorexia Nervosa Binge/Purge Type in diagnostic assessments?+

Distinguishing between Anorexia Nervosa Restricting Type and the Binge/Purge Type hinges on the presence of regular binge eating and compensatory behaviors (purging) such as self-induced vomiting, misuse of laxatives, diuretics, or enemas. While both subtypes exhibit intense fear of weight gain and distorted body image, individuals with the Restricting Type primarily achieve weight loss through strict dieting, fasting, and excessive exercise. Accurate differential diagnosis is essential for tailoring treatment interventions. Consider implementing structured clinical interviews and validated questionnaires to assess eating disorder behaviors and psychopathology. Learn more about the specific challenges associated with each subtype of Anorexia Nervosa to inform treatment planning.

What are the key medical complications and risks associated with Anorexia Nervosa that clinicians should monitor for?+

Anorexia Nervosa carries a significant risk of serious medical complications affecting multiple organ systems. Cardiovascular complications like bradycardia, hypotension, and prolonged QT interval are common and can be life-threatening. Electrolyte imbalances, particularly hypokalemia, can lead to cardiac arrhythmias and seizures. Gastrointestinal issues such as delayed gastric emptying and constipation are frequent. Osteoporosis and increased risk of fractures are significant long-term consequences. Clinicians should conduct regular physical examinations, monitor vital signs, and order laboratory tests including complete blood count, electrolytes, and bone density assessments. Explore how early detection and management of medical complications can improve prognosis in individuals with Anorexia Nervosa.

Clinical accuracy: This information is provided for documentation and coding guidance and should not replace professional medical judgment.

Coding standard: ICD-10-CM, current FY guidelines.