In an effort to create a universally accepted system of nomenclature to describe uterine bleeding abnormalities, an alternative classification system polyp, adenomyosis, leiomyoma, malignancy and hyperplasia, coagulopathy, ovulatory dysfunction, endometrial, iatrogenic, and not yet classified, known by the acronym PALM–COEIN, was published in 2011 by the International Federation of Gynaecology and Obstetrics. The PALM–COEIN system classifies uterine bleeding abnormalities by bleeding pattern and etiology. The purpose of this study is to categorize 200 women with AUB presenting to the Gynaecology indoor patients in SMIMER hospital, SURAT according to PALM–COEIN classification system. It is a retrospective study carried out on 200 patients presenting with complaint of abnormal uterine bleeding. They were evaluated on the basis of history, physical and local examination, USG pelvis, endometrial biopsy if required and other necessary investigations. Categorization was done according to the PALM–COEIN FIGO Classification and then the required treatment was given to the patient. After classifying the patients according to PALM–COEIN classification, it was found that leiomyoma was the most common cause of AUB in patients presenting to the Gynaecology indoor (n=75, 37.5%). It was followed by, adenomyosis (n=40, 20%) not yet classified (n= 36, 18%), ovulatory causes (n=22, 11%), endometrial hyperplasia (n=19, 9.5%), iatrogenic (n= 3, 1.5%), polyp (n = 2, 1%) and coagulation abnormalities (n=2, 1%) and malignancy contributing least to the classification (n= 1, 0.5%). Standardization of related terminology, a systematic approach to diagnosis and investigation, and a step–wise approach to intervention is necessary.