comprehensive health insurance

Hello,

I am European National and I've been in the UK since 2007, however I have not always worked. When I studied I did not have a comprehensive health insurance, however I've just paid Class 3 Voluntary National insurance for years I did not work. I want to apply for Residence Card and I am not sure whether this Voluntary National insurance covers the years I studied without comprehensive health insurance? As I understand NI covers NHS?

Below is what I found on http://www.hmrc.gov.uk/ what information HMRC gives to the UK Border Agency:

''Confirmation of National Insurance for UK citizenship, passport or residency purposes
If you live in the UK and require a letter confirming National Insurance payments for UK citizenship, passport or residency purposes, HMRC can supply confirmation of your National Insurance contributions record which includes the amount and type of benefits claimed. This information is supplied in an agreed format between HMRC and the UK Border Agency which does not contain monetary amounts of National Insurance paid''.

I am really confused...

Thank you.

See also Comprehensive sickness insurance.