Juvenile osteochondrosis of tarsus, left ankle

This code identifies a developmental disorder affecting the growth plates of the tarsal bones in the left ankle of a juvenile patient. It involves a disruption of blood supply to the epiphysis, leading to avascular necrosis and subsequent bone fragmentation and repair. This condition often results in pain, swelling, and limited range of motion in the affected ankle.

Apply this code for a confirmed diagnosis of osteochondrosis specifically impacting the tarsal bones of the left ankle in a pediatric or adolescent patient. Documentation should clearly state the affected side (left) and the anatomical location (tarsus). This code is appropriate when imaging studies (e.g., X-rays, MRI) confirm the characteristic changes of osteochondrosis.

• Ensure documentation specifies "left" ankle; otherwise, an unspecified laterality code may be necessary.
• Distinguish from osteochondrosis affecting other ankle/foot bones (e.g., calcaneus, talus) as separate codes exist.
• Verify the patient's age aligns with the "juvenile" aspect of the diagnosis; adult osteochondrosis has different coding.