Flexion deformity, unspecified site

This code signifies a fixed or persistent bending of a joint, where the joint cannot be fully straightened. It indicates a limitation in the range of motion due to the joint being held in a flexed position, without specifying the anatomical location of the deformity.

Use this code when documentation clearly states a "flexion deformity" but does not specify the affected joint or limb. This is appropriate when the physician's assessment identifies the presence of such a deformity without further anatomical detail.

• Avoid using this code if the specific joint affected by the flexion deformity is documented; instead, use a more specific code from the M21.2 subcategory.
• Ensure the documentation explicitly states "flexion deformity" to support this code.
• Consider querying the provider for a more specific site if possible, as this code offers limited clinical specificity.