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v1.0.0
ICD-10 Guide
ICD-10 CodesE73.8

E73.8

Billable

Other lactose intolerance

BILLABLE STATUSYes
IMPLEMENTATION DATEOctober 1, 2015
LAST UPDATED09/05/2025

Code Description

ICD-10 E73.8 is a billable code used to indicate a diagnosis of other lactose intolerance.

Key Diagnostic Point:

Other lactose intolerance refers to a condition where individuals experience gastrointestinal symptoms due to the inability to properly digest lactose, a sugar found in milk and dairy products. This condition can arise from various metabolic disorders, including enzyme deficiencies that affect lactase production, leading to symptoms such as bloating, diarrhea, and abdominal pain after lactose consumption. Unlike primary lactose intolerance, which is genetically determined and common in certain populations, other lactose intolerance may be secondary to other medical conditions, such as gastrointestinal infections, inflammatory bowel disease, or certain genetic metabolic disorders. The diagnosis often involves clinical evaluation, dietary history, and possibly hydrogen breath tests to confirm lactase deficiency. Management typically includes dietary modifications to limit lactose intake and may involve lactase enzyme supplements to alleviate symptoms. Understanding the underlying cause of lactose intolerance is crucial for effective treatment and patient education.

Code Complexity Analysis

Complexity Rating: Medium

Medium Complexity

Complexity Factors

  • Differentiating between primary and secondary lactose intolerance.
  • Identifying underlying metabolic disorders or enzyme deficiencies.
  • Documenting dietary history and symptomatology accurately.
  • Understanding the implications of related gastrointestinal conditions.

Audit Risk Factors

  • Inadequate documentation of symptoms and dietary history.
  • Failure to specify the underlying cause of lactose intolerance.
  • Misclassification of lactose intolerance type.
  • Lack of supporting diagnostic tests in the medical record.

Specialty Focus

Medical Specialties

Gastroenterology

Documentation Requirements

Detailed patient history, symptom assessment, and results from diagnostic tests such as hydrogen breath tests.

Common Clinical Scenarios

Patients presenting with gastrointestinal symptoms after dairy consumption, requiring evaluation for lactose intolerance.

Billing Considerations

Ensure that all relevant gastrointestinal conditions are ruled out before diagnosing lactose intolerance.

Pediatrics

Documentation Requirements

Growth charts, dietary history, and family history of lactose intolerance or related metabolic disorders.

Common Clinical Scenarios

Children with recurrent abdominal pain or diarrhea after consuming dairy products.

Billing Considerations

Consider the developmental stage of the child and the potential for transient lactose intolerance following gastrointestinal infections.

Coding Guidelines

Inclusion Criteria

Use E73.8 When
  • According to ICD
  • 10 guidelines, E73
  • 8 should be used when lactose intolerance is not classified elsewhere
  • It is important to document the specific type of lactose intolerance and any underlying conditions contributing to the symptoms

Exclusion Criteria

Do NOT use E73.8 When
No specific exclusions found.

Related ICD-10 Codes

Related CPT Codes

83018CPT Code

Lactose tolerance test

Clinical Scenario

Used to confirm lactose intolerance diagnosis.

Documentation Requirements

Document the test results and patient symptoms.

Specialty Considerations

Gastroenterologists should ensure comprehensive evaluation of symptoms.

ICD-10 Impact

Diagnostic & Documentation Impact

Enhanced Specificity

ICD-10 Improvements

The transition to ICD-10 has allowed for more specific coding of lactose intolerance, enabling better tracking of the condition and its underlying causes, which can improve patient management and research outcomes.

ICD-9 vs ICD-10

The transition to ICD-10 has allowed for more specific coding of lactose intolerance, enabling better tracking of the condition and its underlying causes, which can improve patient management and research outcomes.

Reimbursement & Billing Impact

The transition to ICD-10 has allowed for more specific coding of lactose intolerance, enabling better tracking of the condition and its underlying causes, which can improve patient management and research outcomes.

Resources

Clinical References

  • •
    Lactose Intolerance: A Guide for Patients

Coding & Billing References

  • •
    Lactose Intolerance: A Guide for Patients

Frequently Asked Questions

What is the difference between primary and secondary lactose intolerance?

Primary lactose intolerance is a genetic condition where lactase production decreases with age, while secondary lactose intolerance occurs due to damage to the intestine from diseases or infections.