See you can use the code 5 of NEET is and only if you have Physics, Chemistry, Biology/Biotechnology as subjects in your 1st year UG course along with practicals in them. Now as you didn't have Biology/Biotechnology then you can use code 5. Thus the only code which you can use is the code 2 which applies for:

• Student who have passed 10+2 with Physics, Chemistry, Biology and English as subjects.
• Students who have passed from open schooling
• For droppers

Thus you will be accounted as an dropper and you have to use this code. Also Biochemistry isn't accounted as relevance to Biology.

To know more about NEET code visit the link below:

https://medicine.careers360.com/articles/neet-qualification-codes

I hope this answer helps.