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Orthopnea is not hereditary. It is a symptom of a disease.
786.02 is the ICD9 for orthopnea.
The suffix of orthopnea is "-pnea," which means breathing or respiration.
Orthopnea is a symptom, not a procedure. It can have an ICD9 code but not a CPT code.
When one has orthopnea, one has a shortness of breath whenever one lays on a flat surface. Orthopnea causes dyspnea and Paroxysmal Nocturnal Dyspnea.