Category User guide Organisation Logical Observation Identifiers Names and Codes (LOINC) Type Standard Version 2022 Access Open Status Active Updated Feb-22 This document is the fifth section of the Users' Guide for LOINC. LOINC is an international standard for identifying health measurements, observations and documents such as laboratory and clinical test results. Section 5 links to a URL with information to help providers and payers exchange claims attachments electronically. A claims attachment includes clinical and administrative information that is often necessary to decide if claims are valid. Access Users' Guide: 5 - Claims attachments v2022 By accessing this content, you are leaving this website. The Agency takes no responsibility for the accuracy of content on the destination page.