This document summarizes the key changes between the 4th and 5th editions of the NABH accreditation standards. The 5th edition has reduced the total number of standards from 105 to 100 and objective elements from 683 to 651. It introduces a new graded scoring system of 1 to 5 and defines criteria for accreditation including minimum scores across standards and chapters. Core elements related to patient safety must now be met to achieve accreditation.