ICD 9 CM Codes

Excludes
that complicating pregnancy, childbirth, or the puerperium (642.0-642.9)
that involving coronary vessels (410.00-414.9)
Includes
arachnoiditis bacterial
leptomeningitis bacterial
meningitis bacterial
meningoencephalitis bacterial
meningomyelitis bacterial
pachymeningitis bacterial
401 Essential hypertension
402 Hypertensive heart disease
403 Hypertensive kidney disease
404 Hypertensive heart and chronic kidney disease
405 Secondary hypertension