Hypertrophy of bone, unspecified ankle and foot

This code signifies an abnormal enlargement or overgrowth of bone tissue in an unspecified ankle or foot. This hypertrophy is not further specified as inflammatory, post-traumatic, or due to other known causes. It represents a general increase in bone mass in this anatomical region.

Use this code when documentation indicates bone hypertrophy of the ankle or foot without specifying the underlying etiology or a more precise anatomical location within the ankle/foot. This is appropriate when imaging reports or clinical notes describe bone overgrowth but lack further detail regarding its nature or exact site.

• Avoid using this code if a more specific type of bone hypertrophy (e.g., post-traumatic, inflammatory) or a more precise anatomical site (e.g., talus, calcaneus) is documented.
• Ensure the documentation clearly states "hypertrophy of bone" and specifies the ankle and/or foot.
• Consider querying the provider for more specific information if the documentation is vague regarding the cause or exact location.