Trichorrhexis nodosa

This code represents trichorrhexis nodosa, a common acquired hair shaft abnormality characterized by brittle hair with nodular swellings along the shaft. These nodules are points where the hair cuticle is damaged, leading to fraying and breakage. It results in dull, sparse, and easily broken hair.

Apply this code when documentation indicates a diagnosis of trichorrhexis nodosa, often presenting with hair fragility and breakage. This diagnosis is typically made clinically based on the appearance of the hair and confirmed by microscopic examination of the hair shaft. It is frequently associated with chemical processing, excessive heat, or underlying metabolic disorders.

• Differentiate from other hair shaft disorders; microscopic examination findings are key for definitive diagnosis.
• Consider coding any underlying causes or associated conditions, such as metabolic disorders or nutritional deficiencies, as additional diagnoses.
• Ensure the medical record clearly documents the characteristic features of hair shaft damage consistent with trichorrhexis nodosa.