Other specified diabetes mellitus with other skin ulcer

This code signifies a form of diabetes mellitus, other than type 1 or type 2, that is complicated by the presence of a skin ulcer. This ulcer is not further specified as a diabetic foot ulcer or other common diabetic skin complications. It indicates a direct pathological link between the diabetes and the development of the skin lesion.

Apply this code when documentation clearly states "other specified diabetes mellitus" and identifies a co-occurring skin ulcer that is attributed to the diabetic condition. This is appropriate when the physician explicitly links the ulcer to the diabetes, but the diabetes type is not definitively type 1 or 2, or is a secondary form. Supporting documentation should include the specific type of diabetes (e.g., drug-induced, genetic defect) and the presence and location of the skin ulcer.

• Always sequence the diabetes code first, followed by codes for specific manifestations or complications, unless otherwise directed by sequencing rules.
• Ensure the medical record specifies "other specified diabetes mellitus" and not an unspecified type or a type 1 or 2.
• Do not use this code for diabetic foot ulcers (E13.621) or other specific diabetic skin complications if a more precise code is available.