To take up yet another old thread:

Leistungen der gesetzlichen Krankenkassen sind "benefits", wobei es auch den Selbstbehalt/Selbstbeteiligung noch gibt, "the patient's (own) contribution".

Zu vergleichen mit: Asylum Seekers Benefit Law/Asylbewerberleistungsgesetz 

Aus dem NHS-Link in #12 :

 ...  Dentists

About NHS dental services, how to find an NHS dentist and how much treatment costs.

Find a dentist

   What dental services are available on the NHS?

   Dental treatment for people with special needs

   How to find an NHS dentist ...

+ one more (to #15 &16)

I worked in insurance (translation) for many years.

If you are paying yourself (or privately), it cannot be a benefit. Benefits are what you receive if you are so covered by a policy - whether that be public or private (company/employer) insurance.

services/procedure(s)/treatment(s) = Leistungen in this case.

Gotta love these old threads :) :)

#9 You're confused by the fact that Leistung translates as both service and benefit, amongst other things (leistung - LEO: Übersetzung im Englisch ⇔ Deutsch Wörterbuch). That the OT is about health insurance has probably contributed to your confusion.

In this case the correct translation is service, but as several people have pointed out, you probably wouldn't want to translate it directly anyway.