English to German Bus/Financial Finance (general) Pricing

There are different methods that can help you determine the existing *internal consistency* in your practice:

Carrying out a comparative exercise with the members of your team to study the price consistency between the different procedures and consider the different fares per minute (a soft tissue surgery is priced differently than an orthopaedic surgery or a routine surgery).

This is about the *internal consistency* in pricing as well as giving discounts.

I don't get any google hits under "interne Einheitlichkeit", "interne Konstanz" (doesn't sound right either). Is there a short term like that in German, or would "Übereinstimmung bei der Rechnungslegung" or similar, better?