Miliaria profunda

This code represents a severe form of heat rash characterized by the obstruction of eccrine sweat ducts deep within the dermis, leading to the leakage of sweat into the surrounding tissue. This results in firm, flesh-colored, non-pruritic papules or vesicles, typically occurring after prolonged exposure to heat and humidity. Unlike other forms of miliaria, it rarely presents with itching.

Use this code when documentation clearly indicates a diagnosis of miliaria profunda, often observed in individuals who have recently moved to hot, humid climates or those engaged in strenuous physical activity in such environments. Supporting documentation should describe the characteristic deep-seated, non-inflammatory papules and the clinical context of heat exposure.

• Differentiate from other forms of miliaria (e.g., miliaria crystallina, miliaria rubra) based on the depth of obstruction and clinical presentation.
• Ensure documentation specifies "profunda" to avoid miscoding to a more general miliaria code.
• Consider any associated conditions, such as anhidrosis, and code them separately if documented.