Code It! More Practice on Guidelines for Diseases of the Respiratory System 1 of 2 , Try it! Locate codes for the following conditions of the respiratory system in the scenario below. Enter the codes(s) and select the Answer button to reveal how you did. Acute on chronic respiratory failure with hypoxia + What is the main term in this diagnostic statement? The condition is failure so in the Index to Diseases and Injuries, locate main term failure, and indented under that locate sub term respiration, and indented under that, locate sub terr acute on chronic, and indented under that, sub terms with hypoxia. * The code associated with Failure, respiratory, acute on chronic, with hypoxia is z Enter Code . * Locate this code in the Tabular List to verify that no additional characters are required, to verify the code description, and to check for symbols, notes, and applicable guidelines