ICD-10-CM > L00-L99 > L40-L45 > L41 L41 Parapsoriasis Non-Billable/Non-Specific Type 1 Excludes poikiloderma vasculare atrophicans (L94.5) Codes L41.0Pityriasis lichenoides et varioliformis acutaL41.1Pityriasis lichenoides chronicaL41.3Small plaque parapsoriasisL41.4Large plaque parapsoriasisL41.5Retiform parapsoriasisL41.8Other parapsoriasisL41.9Parapsoriasis, unspecified