Flexion deformity, unspecified ankle and toes

This code describes a permanent bending or contracture of the ankle and toes, where the affected joints are fixed in a flexed position. This deformity restricts the normal range of motion and can lead to functional impairment. The "unspecified" nature indicates that the specific cause or laterality (left/right) is not documented.

Use this code when documentation clearly indicates a flexion deformity affecting both the ankle and toes, but the specific ankle (e.g., right, left) is not specified. This code is appropriate when the provider has not identified the underlying etiology or when further specificity is unavailable.

• Avoid using this code if laterality (right/left) of the affected ankle is documented; instead, use a more specific code from the M21.27- series.
• Do not use this code if the flexion deformity is only of the toes or only of the ankle; specific codes exist for each.
• Always review documentation for any underlying conditions or causes of the flexion deformity, as these may need to be coded additionally.