Abn lev substnc nonmed source in specmn from resp org/thrx

This code indicates the presence of an abnormal level of non-drug-related substances found in specimens collected from the respiratory system or thoracic cavity. This could include elevated levels of environmental toxins, industrial chemicals, or other foreign materials detected in bronchoalveolar lavage (BAL) fluid, sputum, or pleural fluid. It signifies an atypical finding that requires further investigation into its source and clinical significance.

Use this code when laboratory analysis of respiratory or thoracic specimens reveals abnormal concentrations of substances not typically found in the body or at unusual levels, and these substances are not medications. Documentation should clearly state the specific substance identified, its abnormal level, and the specimen type (e.g., "elevated asbestos fibers in BAL fluid," "high lead levels in sputum"). This code is often used when investigating environmental exposures or occupational hazards.

• Do not use this code for abnormal levels of prescribed or illicit drugs; use codes from the T40-T50 series for drug-related findings.
• Ensure the documentation specifies the nonmedicinal nature of the substance to differentiate from drug toxicity.
• This code is for abnormal levels of substances, not for the mere presence of foreign bodies (e.g., aspirated food) unless a chemical analysis of the substance itself is abnormal.