A 5-day-old girl from the first pregnancy was born with the weight of 3100g and the length of 51 cm. Her Apgar score was 8/9. On the 3rd day she developed icteric skin. On the 4th day of life her condition is satisfactory, she suckles well,her voice is loud. The umbilical wound is clean. In the lungs there is a puerile respiration, heart sounds are sonorous. The abdomen is soft, the liver is +1 cm, the spleen is The feces are yellow. The blood group of the mother is A (II) Rh+. The blood group of the child is 0 (I) Rh+. Bilirubin levels on the 4th day are as follows: indirect — 140 mc mol/L, direct — 0, ALT — 25 mmol/L, AST — 18 mmol/L. Make the diagnosis: