Respiratory failure

If a patient has documentation on arrival from pulmonary "pre op hypoxemic respiratory failure", proceeds to surgery and has documentation of "post op respiratory failure" which is prolonged leading to trach is there any way to capture both conditions? Both conditions are present, monitored and treated but our coding manager notes coding guidelines indicate the two codes should not be used in conjunction with one another. For severity of illness on arrival I would think the 518.81 POA 'y' would be important to capture. Has anyone had a similar scenario and how was it coded?

Thanks!
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