ICD-11 classes
01 Certain infectious or parasitic diseases
Other bacterial diseases
Other diseases due to chlamydiae
1C23 — Trachoma

ICD-11 1C23 — Trachoma

A disease caused by an infection with the gram-negative bacteria Chlamydia trachomatis. This disease is characterised by a roughening of the inner surfaces of the eyes, and inflammation that may lead to superficial vascularization of the cornea (pannus) and scarring of the conjunctiva. Long term effects include blindness or other visual impairments. Transmission is by direct or indirect contact with the eyes or nose of an infected individual.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 1C23 contains 4 clarifying diagnoses:

  1. 1C23.0 — Initial stage of trachoma
  2. 1C23.1 — Active stage of trachoma
  3. 1C23.Y — Other specified trachoma
  4. 1C23.Z — Trachoma, unspecified

The diagnosis is coded elsewhere:

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