ICD-10 Code E66.89 – Other obesity not elsewhere classified (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E66.89 – Other obesity not elsewhere classified
What it is
This code identifies obesity that does not fit a more specific ICD-10-CM obesity category. Use it when the record documents obesity, but the type or cause is not further specified.
Clinical signs
Clinical features vary; refer to documentation. In practice, you may see elevated body weight with provider-noted obesity, but the chart does not specify morbid obesity, drug-induced obesity, or another defined subtype.
When to use this code
Use E66.89 when the clinician documents obesity without naming a more specific form. It is appropriate when the note supports obesity, but the record lacks enough detail for a more precise code. Check documentation if another obesity diagnosis is stated elsewhere.
Do not use for
Do not use this code if the record clearly identifies another obesity type, such as morbid obesity or drug-induced obesity. Also avoid it when obesity is only suspected or not documented.
Coding tip
Query the provider when obesity is documented but the subtype is unclear, so you can code the most specific diagnosis supported by the record.