A patient was admitted with burns to the arms, first degree burns to the ears, respiratory failure, and pneumonia due to smoke inhalation when a fire started in his home. What are the appropriate diagnosis code assignments?
Assign code 506.3, Other acute and subacute respiratory conditions due to fumes and vapors, as principal diagnosis, for respiratory problems due to smoke inhalation. Assign codes 506.0, Respiratory conditions due to chemical fumes and vapors, bronchitis and pneumonitis due to fumes and vapors, 518.5, Pulmonary insufficiency following trauma and surgery, 941.11, Burn of face, head, and neck, erythema [first degree], ear [any part], 943.00, Burn of upper limb, except wrist and hand, unspecified degree, and E890.2, Conflagration in private dwelling, other smoke and fumes from conflagration, as additional codes.
Codes in category 980-989, Toxic effects of substances chiefly nonmedicinal as to source, exclude respiratory conditions due to external agents, 506-508.9. Localized problems due to smoke inhalation are classified in code category 506-508.3, whereas toxic effects (major systemic problems) related to smoke inhalation are classified in code category 980-989.