E66.9

Obesity, unspecified

Endocrine, nutritional and metabolic diseases Billable
Quick Reference
BMI ≥30 without specification of morbid obesity or type

Clinical Information

When to Use This Code

BMI ≥30 without specification of morbid obesity or type

Common Clinical Scenarios

  • Weight management counseling
  • Obesity as risk factor for other conditions
  • GLP-1 agonist prescribing for weight loss
  • Bariatric surgery evaluation

Documentation Requirements

  • Document BMI value (use Z68.- codes for specific BMI)
  • Record weight in kg or lbs and height
  • Note obesity-related comorbidities
  • Document weight loss efforts and counseling provided

Coding Guidelines

Inclusion Terms

These terms are included in this code:

ObesityOverweight with BMI ≥30Excessive weight

Exclusion Terms

Do NOT use this code for:

  • Morbid obesity (E66.01)
  • Overweight (BMI 25-29.9, use E66.3)
  • Drug-induced obesity (E66.1)

Coding Notes

Use E66.01 for morbid obesity (BMI ≥40 or BMI ≥35 with comorbidities)
Always add Z68.- code to specify exact BMI
Code obesity-related conditions separately

Related ICD-10 Codes

Consider these related codes based on patient presentation:

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Code Details

Code
E66.9
Category
Endocrine, nutritional and metabolic diseases
Billable Status
Billable

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