Genu recurvatum (acquired)

This code describes an acquired hyperextension deformity of the knee joint, where the knee bends backward beyond its normal range of motion. This condition can lead to instability, pain, and functional limitations in ambulation.

Assign this code when documentation clearly indicates an acquired genu recurvatum, often resulting from muscle weakness, ligamentous laxity, or neuromuscular conditions. It is appropriate for both unilateral and bilateral presentations of the acquired deformity.

• Differentiate from congenital genu recurvatum, which would be coded elsewhere.
• Ensure documentation specifies "acquired" to support the use of this code.
• Code any underlying cause or associated conditions, such as paralysis or trauma, as additional diagnoses.