Pityriasis versicolor

This code represents a superficial fungal infection of the skin, also known as tinea versicolor, caused by the Malassezia yeast. It typically manifests as discolored patches on the trunk and proximal extremities, which may be hypopigmented, hyperpigmented, or erythematous. The condition is generally asymptomatic but can cause mild itching or scaling.

Use this code when documentation confirms a diagnosis of pityriasis versicolor, often identified by its characteristic skin lesions and sometimes confirmed by a KOH microscopic examination showing hyphae and spores. This code is appropriate for both initial encounters and follow-up visits for this specific fungal infection.

• Ensure the documentation clearly specifies "pityriasis versicolor" or "tinea versicolor" to support this diagnosis.
• Do not confuse with other dermatological conditions causing skin discoloration, such as vitiligo or post-inflammatory hyperpigmentation.
• This code does not require an additional code for the causative organism unless specifically documented and relevant for treatment.