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 hypertension (P29.2)
 * primary pulmonary hypertension (I27.0)

I10 Essential (primary) hypertension

 * Includes: high blood pressure
 * hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)
 * Excludes1: hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
 * Excludes2: essential (primary) hypertension involving vessels of brain (I60-I69)
 * essential (primary) hypertension involving vessels of eye (H35.0)

I11 Hypertensive heart disease

 * Includes: any condition in I51.4-I51.9 due to hypertension
 * I11.0 Hypertensive heart disease with heart failure
 * Hypertensive heart failure
 * Use additional code to identify type of heart failure (I50.-)
 * I11.9 Hypertensive heart disease without heart failure
 * Hypertensive heart disease NOS

I12 Hypertensive chronic kidney disease

 * Includes: any condition in N18.- due to hypertension
 * arteriosclerosis of kidney
 * arteriosclerotic nephritis (chronic) (interstitial)
 * hypertensive nephropathy
 * nephrosclerosis
 * Excludes1: hypertension due to kidney disease (I15.0, I15.1)
 * renovascular hypertension (I15.0)
 * secondary hypertension (I15.-)
 * Excludes2: acute kidney failure (N17.-)
 * I12.0 Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
 * Use additional code to identify the stage of chronic kidney disease (N18.5, N18.6)
 * I12.9 Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
 * Hypertensive chronic kidney disease NOS
 * Hypertensive renal disease NOS
 * Use additional code to identify the stage of chronic kidney disease (N18.1-N18.4, N18.9)

I13 Hypertensive heart and chronic kidney disease

 * Includes: any condition in I11.- with any condition in I12.-
 * cardiorenal disease
 * cardiovascular renal disease
 * I13.