Knowledge-intensive Processes are difficult to support by traditional workflow oriented Business Process Management approaches. Reasons lie in in ad-hoc decisions and unpredictable workflows that come with them. Adaptive Case Management (ACM) is a paradigm for the management of knowledge-intensive processes that has recently drawn attention in industry and the scientific community. This development led to the standardization of CMMN as a notation for process models for the ACM implementation. This study assess the availability of method support for the use of ACM and the fitness of CMMN for fulfilling the modeling requirements in this context based on a systematic literature review. As a result missing method support, CMMN shortcomings as well as suggestions for the implementation of ACM in combination with CMMN are discussed.