Retiform parapsoriasis

This code describes a rare, chronic inflammatory skin condition characterized by a net-like or reticulated pattern of erythematous, scaly patches and plaques. It is considered a variant of parapsoriasis, often with a persistent course and potential for progression to mycosis fungoides in some cases. The lesions typically present on the trunk and extremities.

Use this code when documentation explicitly states a diagnosis of retiform parapsoriasis. This diagnosis is typically made based on clinical presentation and confirmed by skin biopsy showing characteristic histopathological features. It is appropriate for initial diagnosis and subsequent encounters for management of this chronic condition.

• Ensure the physician's documentation clearly specifies "retiform" parapsoriasis to differentiate it from other parapsoriasis variants.
• Do not confuse this with other forms of parapsoriasis (e.g., small plaque, large plaque) unless the retiform pattern is specifically noted.
• Code any associated symptoms or complications separately if documented and clinically significant.