Answer: B
E72.03 is the appropriate code because it codes for Lowe's syndrome which is a rare X-linked genetic disorder. A cataract is common in patients with this syndrome since birth. Kidney failure is seen in patients of this disorder in the first year of their life.
Option A is not correct because E72.02 codes for Hartnup’s disease which is not the diagnosis here.
Option C is not correct because E72.04 codes for cystinosis which is not the diagnosis here.
Option D is not correct because E72.01 codes for cystinuria which is not the diagnosis here.
