Identification of diabetic foot in medical databases, such as commercial claims and prescription data, is complicated by the lack of a specific ICD-9 code for diabetic foot and variation in coding practices. The following codes indicate ulcer of the lower limb or foot:
- 707.1 Ulcer of lower limbs, except pressure ulcer
- 707.14 Ulcer of heel and midfoot
- 707.15 Ulcer of other part of foot
- 707.19 Ulcer of other part of lower limb
One or more codes, in combination with a current or prior diagnosis of diabetes may be sufficient to conclude diabetic foot:
- 250.0 Diabetes Mellitus
- 250.8 Diabetes with other specified manifestations
Sohn et al. survey alternative methods used in published literature. In particular, they note:
"Ramsey et al. used the simplest method, involving only one diagnostic code (ICD-9-CM 707.1×, "Ulcer of lower limbs, except decubitus"), in a study of incidence rates and treatment costs of foot ulcers among individuals enrolled in a HMO. In a validation study, this method was shown to have 74% sensitivity and 94% specificity compared to medical records."
Read more about this topic: Diabetic Foot Ulcer
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