ICD-10-CM 2027
ICD-10 code for Overweight
From the official ICD-10-CM alphabetic index entry “Overweight”. Page updated September 29, 2026.
About coding Overweight
The ICD-10-CM code for Overweight is E66.3 (Overweight).
Within E66 (Overweight and obesity), E66.3 is specifically for Overweight. Related codes cover obesity due to excess calories (E66.0), drug-induced obesity (E66.1), Morbid (severe) obesity with alveolar hypoventilation (E66.2), other obesity (E66.8) and obesity, unspecified (E66.9).
Code first: obesity complicating pregnancy, childbirth and the puerperium, if applicable (O99.21-).
Use an additional code to identify body mass index (BMI), if known, for adults (Z68.1-Z68.45) or pediatrics (Z68.5-).
Common questions about Overweight ICD-10 codes
What is the ICD-10 code for Overweight?
- E66.3 — Overweight.
Is E66.3 billable?
- Yes. E66.3 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can E66.3 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict E66.3 as a principal diagnosis.
Is E66.3 a CC or MCC?
- No. E66.3 is neither a CC nor an MCC under MS-DRG v44.0.