1B73ICD-11 MMS 2026-01
Ecthyma
Description
Ecthyma is a superficial ulcerative bacterial pyoderma. It is characterised by small, purulent, shallow, punched-out ulcers with thick, brown-black crusts and surrounding erythema. The commonest form is caused by beta-haemolytic streptococci, often in association with Staphylococcus aureus. It is associated with poor hygiene and malnutrition. Ecthyma gangrenosum is an uncommon severe variant caused by Pseudomonas aeruginosa.
Exclusions from above levels
NE83.1– Infection arising from device, implant or graft, not elsewhere classified
Child codes
Sibling codes
1B70– Bacterial cellulitis, erysipelas or lymphangitis1B71– Necrotising fasciitis1B72– Impetigo1B74– Superficial bacterial folliculitis1B75– Deep bacterial folliculitis or pyogenic abscess of the skin1B7Y– Other specified pyogenic bacterial infection of skin or subcutaneous tissue1B7Z– Pyogenic bacterial infection of skin or subcutaneous tissue, unspecified
Foundation entity
Part of: 01: Certain infectious or parasitic diseases