ICD-10 diagnosis code

L66 Cicatricial alopecia [scarring hair loss]

L66 is the ICD-10 code for Cicatricial alopecia [scarring hair loss]. It is a three-character category divided into 7 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block L60–L75 (Disorders of skin appendages) in Chapter XII, Diseases of the skin and subcutaneous tissue.

Code type: Category (3 characters)
Chapter: XII · L00–L99
Classification: WHO ICD-10, 2019 version

Subcodes of L66

L66 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

L66Ärrbildande håravfall

DenmarkICD-10-DK

DL66Hårtab med ardannelse

FinlandICD-10-FI

L66Arpikaljuus

GermanyICD-10-GM

L66Narbige Alopezie [Haarausfall mit Narbenbildung]

FranceICD-10-FR

L66Alopécie cicatricielle

NetherlandsICD-10-NL

L66alopecia cicatricans [haarverlies met littekenvorming]

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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