Juvenile osteochondrosis of radius and ulna, left arm

This code represents a developmental disorder affecting the growth plates (epiphyses) of the radius and ulna in the left arm of a juvenile patient. It involves a disturbance in the normal process of endochondral ossification, leading to avascular necrosis and subsequent reossification, often resulting in pain, swelling, and limited range of motion.

Use this code for documented cases of osteochondrosis specifically affecting the radius and ulna in a patient under 18 years of age, localized to the left arm. Supporting documentation should include imaging reports (X-ray, MRI) confirming the diagnosis and laterality, along with clinical findings consistent with osteochondrosis.

• Ensure the documentation clearly specifies "juvenile" or a patient age consistent with juvenile status.
• Verify laterality; this code is specific to the left arm. Use the appropriate code for the right arm or bilateral involvement.
• Distinguish from other forms of osteochondrosis affecting different joints or bones; this code is specific to the radius and ulna.