OBJECTIVES: CBIA is a small group discussion which emphasizes on the active role of participants in looking for information. CBIA has been proven effective to improve tuberculosis patient’s adherence to treatment program, pharmacy assistant’s skills in hypertension drug information service, and skills in early detection of Brest cancer.Therefore, CBIA was developed adapting the original CBIA, enriched with key messages in healthy life-style for diabetic patients as CBIA-DM. This study was aimed to assess the impact of CBIA-DM on diabetic patients' quality of life. METHODS: Time series, pre and post quasi-experimental design. Three groups were involved in the study: CBIA-DM, DM-club and normal-care group. Data were collected in pre-intervention, immediately, one, three and six months post intervention using WHOQOL-bref questionnaires Bahasa version. Categorizing scores in good (>mean+SD), fair (between mean+SD and mean-SD), and poor (