Now after having suffered the torments inflicted in the hells, the evil-doers pass into animal bodies. 2. Criminals in the highest degree enter the bodies of all plants successively. 3. Mortal sinners enter the bodies of worms or insects. 4. Minor offenders enter the bodies of birds. 5. Criminals in the fourth degree enter the bodies of aquatic animals. 6. Those who have committed a crime effecting loss of caste, enter the bodies of amphibious animals. 7. Those who have committed a crime degrading to a mixed caste, enter the bodies of deer. 8. Those who have committed a crime rendering them unworthy to receive alms, enter the bodies of cattle. (Vishnu Smriti XLIV)
But those who do not follow either of these two paths are born among small animals and insects again and again. [This can be said about those who are born in] this third state: ‘Be born and die.’ This is why the other world does not get filled up. Therefore one should despise this state. Here is a verse on the subject—(Chandogya-Upanishad Verse 5.10.8)
So if you do bad karma you will be born as an animal and insects.
But is there any verse that tell us about human birth but with diseases, abnormality and disorders[Congenital disorder] .
Disorders that we inherent by our parents.