ICD-11 classes
14 Diseases of the skin
Skin disorders provoked by external factors
Miscellaneous specified dermatoses provoked by pressure
AA12 — Chondrodermatitis nodularis
ICD-11 AA12 — Chondrodermatitis nodularis
A common pressure-induced painful nodule or ulcer affecting the external ear. It results from ischaemia of skin and underlying cartilage from a focal point of high pressure from the weight of the recumbent head. The site of involvement is dependent on the shape of the pinna (most commonly the helix is involved but in some individuals it is the antihelix which is more prominent) and whether the sufferer is limited to sleeping on one side and is thus unable to spare the ear from constant pressure when lying in bed.
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: