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K90.49
ICD-10-CM
Food Intolerance

Understanding Food Intolerance (F), also known as Non-IgE Mediated Food Hypersensitivity, requires accurate clinical documentation for effective healthcare management. This includes differentiating conditions like Lactose Intolerance and Non-Celiac Gluten Sensitivity. Learn about diagnosis codes, symptoms, and best practices for documenting food intolerance in medical records for improved patient care and accurate medical coding.

Also known as

Non-IgE Mediated Food Hypersensitivity
Lactose Intolerance
Non-Celiac Gluten Sensitivity

Diagnosis Snapshot

Key Facts
  • Definition : Adverse reaction to food not involving the immune system's IgE antibodies.
  • Clinical Signs : Digestive upset (bloating, gas, diarrhea), headaches, skin rashes, fatigue. Symptoms vary.
  • Common Settings : Outpatient clinics, gastroenterology, primary care, dietitian consultations.

Related ICD-10 Code Ranges

Complete code families applicable to AAPC K90.49 Coding
K90-K93

Diseases of digestive system

Covers various digestive disorders, including malabsorption and other food-related issues.

D80-D89

Disorders involving the immune mechanism

Includes conditions where the immune system reacts abnormally, sometimes to food components.

R10-R19

Symptoms and signs involving the digestive system and abdomen

Encompasses symptoms like abdominal pain and discomfort, which can occur with food intolerance.

Code-Specific Guidance

Decision Tree for

Follow this step-by-step guide to choose the correct ICD-10 code.

Is the food intolerance lactose intolerance?

  • Yes

    Code as DA3.1, Lactose intolerance

  • No

    Is it non-celiac gluten sensitivity?

Code Comparison

Related Codes Comparison

When to use each related code

Description
Adverse food reaction, not immune-mediated.
Immune response to food protein, IgE-mediated.
Autoimmune reaction to gluten, affecting small intestine.

Documentation Best Practices

Documentation Checklist
  • Document specific food(s) causing reaction.
  • Describe symptoms experienced (e.g., bloating, rash).
  • Rule out IgE-mediated allergy with appropriate testing.
  • Note symptom onset time after ingestion.
  • Record dietary elimination trial results if conducted.

Coding and Audit Risks

Common Risks
  • Unspecified Intolerance

    Coding Fxyz without specific food documented leads to claim denials and inaccurate data. CDI crucial for specificity.

  • Symptom vs. Intolerance

    Miscoding symptoms (e.g., abdominal pain) as Fxyz if intolerance not confirmed. Impacts quality metrics and reimbursement.

  • Allergy vs. Intolerance

    Confusing true allergy (IgE-mediated) with food intolerance (Fxyz). Distinct pathophysiology requires accurate coding for patient safety.

Mitigation Tips

Best Practices
  • Eliminate trigger foods. Document dietary restrictions in EHR. ICD-10-CM: K52.2, Z71.4
  • Keep a food diary. Correlate symptoms with ingested foods. SNOMED CT: 419199007
  • Trial elimination diet. Confirm food intolerance via oral food challenge. CPT: 95004
  • Consider food substitution. Ensure adequate nutrient intake. LOINC: 2298-1
  • Educate patients on food labels, hidden ingredients. Improve healthcare compliance.

Clinical Decision Support

Checklist
  • Rule out IgE-mediated food allergy (ICD-10 Z91.01)
  • Document specific food(s) causing symptoms (SNOMED CT 419199007)
  • Assess for symptoms like bloating, nausea, or migraines (ICD-10 R14)
  • Consider elimination diet and food challenge for diagnosis (SNOMED CT 225367009)

Reimbursement and Quality Metrics

Impact Summary
  • Food intolerance diagnosis coding impacts reimbursement through accurate ICD-10-CM code selection (K52.2, K90.0, R14.3, etc.) maximizing claim acceptance.
  • Proper food intolerance coding improves quality metrics for digestive health reporting, enhancing patient care and hospital performance.
  • Accurate food intolerance documentation and coding directly impact hospital revenue cycle management, reducing denials and optimizing payments.
  • Specificity in food intolerance coding (lactose, gluten, etc.) improves data analysis for population health management and resource allocation.

Streamline Your Medical Coding

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Frequently Asked Questions

Common Questions and Answers

Q: How to differentiate between food intolerance, food allergy, and other GI conditions in clinical practice?

A: Differentiating food intolerance from food allergy and other gastrointestinal conditions requires a thorough patient history, physical examination, and targeted diagnostic testing. Food intolerance, including non-IgE mediated food hypersensitivity, lactose intolerance, and non-celiac gluten sensitivity, typically presents with delayed-onset symptoms like bloating, abdominal pain, and changes in bowel habits after ingesting the offending food. Unlike IgE-mediated food allergies, food intolerance does not involve an immediate hypersensitivity reaction and is not life-threatening. Consider food-specific elimination diets followed by reintroduction challenges to pinpoint trigger foods. Explore how specific IgG testing, hydrogen breath tests (for lactose intolerance), and genetic testing (for celiac disease to rule it out) can aid in the diagnosis. For patients experiencing significant distress or symptoms suggestive of other GI disorders like inflammatory bowel disease (IBD), further investigations such as endoscopy or biopsy may be warranted. Learn more about the overlapping symptoms and diagnostic criteria for differentiating these conditions to avoid misdiagnosis.

Q: What are the evidence-based dietary management strategies for patients with confirmed food intolerance?

A: Managing food intolerance effectively relies on identifying and eliminating or reducing the intake of trigger foods. For lactose intolerance, advise patients to restrict lactose-containing dairy products or utilize lactase enzyme supplements. In cases of non-celiac gluten sensitivity, a gluten-free diet is recommended, emphasizing naturally gluten-free foods and cautiously selecting processed gluten-free products due to potential variations in nutritional value. For other food intolerances, such as fructose or histamine intolerance, a low-FODMAP or low-histamine diet, respectively, can be considered. Consider implementing a structured elimination diet followed by gradual reintroduction of suspected trigger foods to accurately identify individual sensitivities. Collaborating with a registered dietitian specializing in food intolerances can personalize dietary advice and address potential nutritional deficiencies arising from restrictive diets. Explore how detailed food diaries and symptom tracking can help patients pinpoint problematic foods and manage their condition proactively.

Quick Tips

Practical Coding Tips
  • Code F, not allergy
  • Document symptoms clearly
  • Check alternate names
  • Rule out IgE allergy
  • Query physician if unclear

Documentation Templates

Patient presents with symptoms suggestive of food intolerance, possibly a non-IgE mediated food hypersensitivity.  Differential diagnoses considered include lactose intolerance, non-celiac gluten sensitivity, and other adverse food reactions.  The patient reports experiencing [specific symptoms e.g., bloating, abdominal pain, diarrhea, gas, headaches, skin rash, fatigue] following ingestion of [specific food e.g., dairy products, gluten-containing foods, specific fruits or vegetables].  Onset of symptoms occurs [timeframe e.g., within minutes, several hours] after consumption.  Patient denies symptoms consistent with anaphylaxis, such as airway compromise, angioedema, or urticaria, differentiating this presentation from IgE-mediated food allergy.  Physical examination reveals [objective findings e.g., abdominal distension, tenderness to palpation, normal respiratory effort, clear skin].  Review of systems is otherwise unremarkable.  Diagnostic evaluation may include a food diary, elimination diet, hydrogen breath test for lactose intolerance, or celiac disease serology if indicated.  Patient education provided regarding food intolerance management, including dietary modifications, avoidance of trigger foods, and symptomatic treatment options such as over-the-counter anti-diarrheals or anti-gas medications.  Follow-up scheduled to assess response to dietary changes and further evaluate if symptoms persist.  ICD-10 coding will be determined based on the specific food intolerance diagnosed (e.g., K89.1 for lactose intolerance, K52.2 for non-celiac gluten sensitivity).  Medical billing codes will reflect evaluation and management services, diagnostic testing, and patient education provided.