A patient has type 2 diabetes with nephropathy and obesity. How are these conditions coded and sequenced?

• A. Diabetes with nephropathy primary; obesity as a separate secondary
• B. Obesity primary; diabetes with nephropathy secondary
• C. Diabetes and obesity coded as a single combined code
• D. Obesity as primary and diabetes with nephropathy not coded

Answer: (A)

When coding multiple chronic conditions, the condition driving the care is listed first. Diabetes with nephropathy is the active disease with a specific complication, so it should be the principal diagnosis. Obesity is a separate condition that should be documented as a secondary diagnosis if it’s clinically relevant to the visit. There isn’t a single code that combines diabetes with nephropathy and obesity into one; you code the diabetes with its nephropathy first and then add obesity as a secondary code. For example, use the diabetes with nephropathy code as the primary (E11.21) and obesity (E66.9, or a more specific obesity code if documented) as the secondary. This sequencing aligns with how the care is focused on the diabetes and its kidney complication, with obesity noted as an additional condition.