18 digit code for voluntary contributions

I was issued with an 18 digit code for voluntary contributions in 2019. Can I use this code to make another contribution now or will I need a new code? Thanks for your help

You need to get a different code. Also always pay the exact amount agreed for the code they give you.

Thank you, that’s much appreciated

Hi Craig H,
If you would like to make another payment of voluntary National Insurance contributions then please call our National Insurance Helpline on 0300 200 3500 and they will be able to provide you with a new 18 Digit Reference number and also provide you with up-to-date details of our bank details. They’ll check your National Insurance account first.
Before making payment you may with to speak with the Future Pension Centre to make sure that your payment of voluntary contributions will be beneficial to your Pension entitlement.
Their telephone number is:  0800 731 0175.
Thank you.