What is diagnosis code 402.10?

Diagnosis code 402.10 refers to "Hypertensive Heart disease, unspecified." This code is used in medical billing to indicate a patient has heart disease associated with hypertension, but without specifying the presence of heart failure or other complications. It is part of the ICD-9-CM coding system, which was replaced by ICD-10-CM codes. For more detailed classification, the newer ICD-10 code would provide specific information regarding the condition.