Instructor’s Guide for ICD-9-CM Diagnostic Coding and ...

A priori coding categort (i.e. theory-driven/deductive code)* ... Relating to treatment of chronic obstructive pulmonary disease (COPD), emphysema, CO 2. retention. Includes questions regarding use of CPAP / BiPAP, mechanical ventilation for treatment, and arterial blood gas utilization. ... ................
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