2025 ICD-10-CM code L74.1

Miliaria crystallina. This condition is characterized by small, clear, superficial vesicles caused by blockage of sweat ducts.

Refer to current ICD-10-CM coding guidelines for accurate reporting.Ensure that the diagnosis is clinically supported by the documentation.

Medical necessity for treatment is generally established by the presence of skin lesions causing discomfort or concern for the patient.The goal of treatment is to alleviate symptoms and prevent complications, such as secondary infection.

Diagnosis and treatment are typically managed by primary care physicians, dermatologists, or other healthcare professionals.Clinical responsibility includes accurate diagnosis through physical examination, distinguishing miliaria crystallina from other similar conditions, and providing appropriate management and education to the patient.

In simple words: Miliaria crystallina, sometimes called "sweat rash," is a skin condition where tiny, clear blisters form due to blocked sweat ducts. It's not usually itchy or painful.

Miliaria crystallina is a disorder of the eccrine sweat glands characterized by the eruption of minute, superficial, non-inflammatory vesicles. These vesicles result from the obstruction of the sweat ducts within the stratum corneum, the outermost layer of the epidermis.The trapped sweat forms tiny, clear blisters that resemble dew drops on the skin.

Example 1: A newborn infant develops tiny, clear vesicles on their face and torso during a period of hot weather., An adult athlete develops small, superficial blisters on their chest and back after intense exercise in humid conditions., A patient on bed rest develops miliaria crystallina in areas where sweat is trapped against the bedding.

Documentation should include a description of the lesions, their location, and any associated symptoms or predisposing factors, such as hot weather, excessive sweating, or occlusive clothing.

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