Mrs. Fryer visits her nephrologist for an erythropoietin (EPO) injection for her anemia. She has Stage 3 chronic kidney disease, which is the cause of the anemia. Applying the coding concept from ICD-10-CM guideline I. A.13., what ICD-10-CM code(s) should be reported for the EPO injection

N18.3, D63.1

Explanation:

Chronic Kidney Disease (CKD) is defined as the  condition in human body that is known for by step by step loss of kidney function over a time being. N18.3 is usually given to patient in stage 3 of CKD. Epoetin injection is an artifical of human erythropoietin (EPO). naturally, EPO is produced  in the body, by the kidneys largely. It energies or encourage the bone marrow to produce red blood cells. lack of EPO in the body can lead to severe  occurence of anemia.D63.1 is usually called a chargeable ICD code. it is specifically used to show a diagnosis of anemia in chronic kidney disease.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)