Juvenile osteochondrosis of tarsus, unspecified ankle

This code describes a developmental disorder affecting the growth plates of the tarsal bones in the foot of a child or adolescent. It involves a disruption of the normal process of bone formation, leading to avascular necrosis and subsequent reossification, often resulting in pain and functional impairment. The specific tarsal bone affected is not documented or is unknown.

Use this code when documentation indicates juvenile osteochondrosis of an unspecified tarsal bone, or when the specific tarsal bone involved is not clearly identified. This diagnosis is typically made based on clinical presentation (e.g., foot pain, limping) and confirmed with imaging studies such as X-rays or MRI.

• Avoid using this code if the specific tarsal bone affected is known; instead, use a more specific code from the M92.6 subcategory (e.g., M92.61- for calcaneus).
• Ensure the patient's age is consistent with a "juvenile" diagnosis, typically children and adolescents.
• Consider sequencing this code as a primary diagnosis if it is the reason for the encounter, or as a secondary diagnosis if it is a co-morbidity impacting treatment.