ICD-10 Code L68.1 – Acquired hypertrichosis lanuginosa (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L68.1 – Acquired hypertrichosis lanuginosa
What it is
L68.1 identifies acquired hypertrichosis lanuginosa, a rare condition with new, excessive growth of fine, soft lanugo-type hair in someone who previously did not have it.
Clinical signs
You may see sudden, generalized or widespread fine hair growth, often on the face, trunk, or extremities. Clinical features vary; refer to documentation.
When to use this code
Use L68.1 when the record specifically documents acquired hypertrichosis lanuginosa or clearly describes acquired lanugo-like hair growth. It is appropriate when the provider distinguishes it from congenital hair disorders or other forms of hypertrichosis. Check documentation if the cause or type is unclear.
Do not use for
Do not use this code for congenital hypertrichosis, hirsutism, or simple localized excess hair growth without lanugo-type features. If the chart does not confirm the acquired form, check documentation.
Coding tip
Code only when the provider documents the acquired lanugo pattern; otherwise, query for clarification.