Partial physeal arrest, left proximal humerus

This code describes a condition where the growth plate (physis) in the upper part of the left humerus has prematurely and incompletely stopped growing. This can lead to limb length discrepancies or angular deformities of the bone. It signifies a localized growth disturbance affecting the long bone's development.

Use this code when documentation explicitly states a "partial physeal arrest" or "partial growth plate arrest" affecting the proximal end of the left humerus. Supporting documentation often includes imaging reports (X-rays, MRI) confirming the physeal closure and clinical notes detailing the location and laterality.

• Ensure documentation specifies "partial" arrest; complete arrest would be coded differently.
• Verify laterality (left) and bone (humerus) and specific location (proximal).
• Do not confuse with epiphyseal fractures or other growth plate disorders without explicit mention of arrest.