ICD-11 classes
14 Diseases of the skin
Skin disorders involving specific cutaneous structures
Disorders of the epidermis and epidermal appendages
Disorders of hair
EC21 — Genetic defects of hair or hair growth

ICD-11 EC21 — Genetic defects of hair or hair growth

The diagnosis has no description.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code EC21 contains 7 clarifying diagnoses:

1. EC21.0 — Genetic defects of the hair shaft
2. EC21.1 — Genetic syndromes with abnormalities of the hair shaft
3. EC21.2 — Hereditary alopecia or hypotrichosis
4. EC21.3 — Genetic syndromes with alopecia or hypotrichosis
   It contains 2 clarifying diagnoses.
5. EC21.4 — Genetically-determined hypertrichosis
6. LD27.3 — Genetic syndromes with hypertrichosis
7. EC21.Y — Other specified genetic defects of hair or hair growth

The diagnosis is coded elsewhere:

• Genetic and developmental disorders affecting the skin #15936
• Genetic defects of hair or hair growth #15971