Effective October 1, 2011 a new code has been created to uniquely describe respiratory conditions due to smoke inhalation (508.2). In addition, a "use additional code" note has been added under categories 506 and 508 to help guide coders in the use of these codes in conjunction with the associated specific respiratory conditions. Previously, ICD-9-CM's Alphabetic Index led to code 987.9, Toxic effect of unspecified gas, fume, or vapor, for smoke inhalation.
Smoke inhalation is the number one cause of death in victims of indoor fires. Smoke inhalation injuries are due to inhalation or exposure to hot gaseous products of combustion. This is known to cause serious respiratory complications. Nearly 50% to 80% of fire deaths are the result of smoke inhalation injuries, including burns to the respiratory system. The hot smoke injures or kills by a combination of thermal damage, poisoning and pulmonary irritation and swelling, caused by carbon monoxide, cyanide, and other combustion products.
506 Respiratory conditions due to chemical fumes and vapors Add Use additional code to identify associated respiratory conditions, such as: Add acute respiratory failure (518.81) 508 Respiratory conditions due to other and unspecified external agents Add Use additional code to identify associated respiratory conditions, such as: Add acute respiratory failure (518.81) New code 508.2 Respiratory conditions due to smoke inhalation Smoke inhalation NOS Excludes: smoke inhalation due to chemical fumes and vapors (506.9)