Patient presents with hypoxia respiratory failure, characterized by insufficient oxygenation of arterial blood despite adequate ventilation.  Symptoms include dyspnea, tachypnea, and cyanosis.  Physical examination reveals decreased oxygen saturation (SpO2),  use of accessory respiratory muscles, and altered mental status.  Arterial blood gas (ABG) analysis demonstrates hypoxemia (PaO2 less than 60 mmHg) with or without hypercapnia.  Differential diagnosis includes pneumonia, acute respiratory distress syndrome (ARDS), pulmonary embolism, and COPD exacerbation.  Chest x-ray,  CT scan, and other diagnostic studies may be indicated to identify underlying etiology.  Treatment focuses on supporting oxygenation with supplemental oxygen therapy,  mechanical ventilation if necessary, and addressing the underlying cause.  Patient's respiratory status is closely monitored, with continuous pulse oximetry and repeat ABG analysis.  Medical coding and billing will reflect the specific diagnosis, severity of respiratory failure, and treatment modalities implemented.  This includes ICD-10 codes for hypoxemic respiratory failure (J96.00, J96.01, J96.20, J96.21) and related conditions, as well as appropriate CPT codes for procedures such as intubation and mechanical ventilation.  Prognosis depends on the underlying cause and the patient's overall health status.  Continued monitoring and appropriate interventions are crucial for optimal patient outcomes.