Solution : https://service.sap.com/sap/support/notes/534191 (SAP Service marketplace login required)
Key words : 
materials management -> hospital material master -> tools -> material master data transfer important, logistics - general -> material master -> field selection, transfer material master data, hospital-specific material master fields, sap healthcare - industry-specific component, hospital-specific data exists, hospital material master, sap material master, hospital-specific data, field selection group
Related Notes : 
       
| 433812 | Media product master data transfer | 
| 120104 | Deleting fields from structure CI_MMH1 | 
| 44410 | Integrating cust.-specific fields in matl master |