Irritant cntct derm rel to fecal or urinary stoma or fistula

This code signifies an inflammatory skin reaction, specifically irritant contact dermatitis, occurring around a surgically created opening (stoma) for fecal or urinary diversion, or near an abnormal connection between two epithelialized surfaces (fistula). The skin irritation is directly caused by prolonged exposure to effluent (feces or urine) from the stoma or fistula.

Apply this code when documentation clearly indicates skin inflammation, erythema, or breakdown directly attributable to the irritating effects of stool or urine around a stoma (e.g., colostomy, ileostomy, urostomy) or a fistula. This diagnosis is supported by physician notes detailing the location, appearance, and the causative agent (effluent).

• Differentiate from allergic contact dermatitis (L23.-) which involves an immune response to a specific allergen, not just irritation from effluent.
• Always code the underlying condition requiring the stoma or fistula as a primary diagnosis if it is still active and being treated.
• Ensure documentation specifies "irritant" contact dermatitis and links it to the stoma/fistula effluent to avoid confusion with other forms of dermatitis.