M20.42
ICD-10-CMThis code signifies an acquired deformity of one or more toes on the left foot, characterized by an abnormal bend in the middle joint (proximal interphalangeal joint), causing the toe to resemble a hammer. This condition typically results in the tip of the toe pointing downwards and the knuckle pointing upwards.
Apply this code when documentation specifies an acquired hammer toe deformity affecting the left foot, without further specification of the specific toe involved (e.g., great toe). Supporting documentation should clearly indicate the laterality and the acquired nature of the deformity, distinguishing it from congenital forms.
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