Objectives: The objective of the study was to assess the performance of the Indian Diabetic Risk Score (IDRS) questionnaire for detecting and predicting risk of Type 2 diabetes mellitus (T2DM) in patients attending a primary health centre. Material and Methods: We conducted a cross-sectional study comprising 1530 adult participants, age (__ampersandsigngt;20 yrs) attending Outpatient department of a primary health centre located at Harwan, district Srinagar without a diagnosis of Type 2 diabetes mellitus. The risk of developing Type 2 diabetes mellitus was assessed using the validated and widely used Indian diabetic risk score. Total Risk Score of each participant was analysed and compared. Results: Data on 1530 participants with unknown diabetes mellitus were analysed with the mean age of 51.5 years, majority 54% females, 64.18% belonging to nuclear family and majority were from lower middle socio economic status. Around 99.73% were non vegetarian population with 19.15% having smoking habits. According to Indian diabetic risk score of Madras diabetic research federation the study population were classified to be low, medium and high risk for developing type 2 diabetes were 70.4%, 19.5% and 10.1% respectively. Conclusion: The IDRS questionnaire designed by Madras Diabetic Research Foundation is a useful screening tool to identify unknown Type 2 diabetes mellitus. The questionnaire is a reliable, valuable and easy to use screening tool which can be used in a primary care setup and better convince people at high risk of Type 2 diabetes mellitus to take action towards healthier lifestyle habits.