Short Achilles tendon (acquired), unspecified ankle

This code represents an acquired shortening of the Achilles tendon, a condition often referred to as equinus deformity, where the ankle is fixed in a plantarflexed position. This shortening is not congenital but develops over time due to various factors, limiting dorsiflexion of the foot.

Use this code when documentation specifies an acquired short Achilles tendon without further detail regarding the specific ankle affected (left or right). This diagnosis is supported by clinical findings of limited ankle dorsiflexion and a history indicating an acquired rather than congenital origin.

• Do not use this code if the documentation specifies a congenital short Achilles tendon; refer to codes in the Q66 category.
• Ensure documentation clearly states "acquired" to differentiate from congenital forms.
• If the laterality (left or right ankle) is specified, use the more specific codes M67.01- or M67.02-.