The psychiatric consultation liaison nurse( PCLN) acts as an important link between medical and mental health services. The need for such roles are emerging due to upsurge in the complex needs in the diverse populations who have either physical illness with mental illness as comorbidity or have primary mental illness with secondary physical illness. There is also geropsychiatry wherein PCLN services are requiring utmost attention. With implementation of such roles there will be better competent care delivered, probability of improved quality of life, early detection and treatment of cases, cost effectiveness and reduced length of hospital  stay.