Ecthyma

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

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.

sections/codes in this section (1B73-1B73)

• Streptococcal ecthyma  (1B73.0)
• Staphylococcal ecthyma  (1B73.1)
• Ecthyma gangrenosum  (1B73.2)
• Other specified ecthyma  (1B73.Y)
• Ecthyma, unspecified  (1B73.Z)

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