Final answer:
Type 2 diabetes mellitus is a multifactorial disorder that can cause complications like mild non-proliferative diabetic retinopathy and macular edema. It's identified using medical codes that are subject to change based on the coding system.
Step-by-step explanation:
Type 2 diabetes mellitus (DM) is a multifactorial disorder characterized by chronic inflammation leading to insulin resistance and impaired insulin production, resulting in high levels of blood glucose. Complications of type 2 diabetes can include various conditions, one of which is diabetic retinopathy. Diabetic retinopathy is classified into stages, with mild non-proliferative diabetic retinopathy being an early stage of the disease. When this condition is accompanied by macular edema, it indicates swelling in an area of the retina that provides sharp vision. As for the coding, medical codes are used to report diseases and conditions for various purposes including treatment, billing, and research. However, specific codes are not provided in the response as coding can vary based on the coding system being used (such as ICD-10, for example) and updates or changes to these systems.