Many test providers and certification programs define test plans in order to test the conformity of CDA documents against implementation guides. Even if the applications and systems tested provide valid CDA documents, it is not easy for test providers to decide if the validated documents are rich enough to have a good reliability on tested tools; providing the coverage of the areas tested is mandatory based on many test framework specifications. Many projects tried to define a way to describe the richness and providing scoring for validated CDA documents. In this paper, we describe a new methodology to identify the richness of CDA documents based on implementation guides specification. We define a way to provide a scoring for the richness of the CDA documents, with some applications on IHE and C-CDA documents.