Diagnostic code
278 — Nutritional and Metabolic Disorders: Obesity
278 is an OHIP diagnostic code used on Ontario Health Insurance Plan claims. Nutritional and Metabolic Disorders: Obesity.
- Code
- 278
- Description
- Nutritional and Metabolic Disorders: Obesity
Updated October 26, 2026
278 is the OHIP diagnostic code for obesity.
Conditions billed under this code
- Obesity
What it covers
The Ministry lists 278 as 'Obesity' under Nutritional and Metabolic Disorders, in the Endocrine, Nutritional and Metabolic Diseases and Immunity Disorders chapter.
Use it when obesity or weight management is the main reason for the visit.
Close neighbours: 272 for high cholesterol and other lipid disorders, 250 for diabetes, 249 for pre-diabetes, 306 for eating disorders such as binge eating, and 263 for malnutrition.
Billing notes
- The bariatric management codes K090 (pre-operative) and K091 (post-operative monthly) are payable only to physicians registered with the ministry as providing services in a Bariatric Centre of Excellence or Bariatric Regional Assessment and Treatment Centre (A54–A55).
Related codes: 272, 250, 249, 306, 263
Sources
- OHIP Diagnostic Codes (Ministry of Health, February 2026)
- Schedule of Benefits: Physician Services (effective July 1, 2026)
APEX flags claims whose diagnostic code does not fit the service billed before they come back rejected. See how APEX works · Pricing