I12

Classification

Category:Diseases of the circulatory system

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Coding Guidance

I12 should not be used for reimbursement purposes as there are more specific codes below it that contain a greater level of detail.

Inclusion Terms

any condition in N18 and N26 - due to hypertension
arteriosclerosis of kidney
arteriosclerotic nephritis (chronic) (interstitial)
hypertensive nephropathy
nephrosclerosis

Excludes 1

Excludes 2

From I00-I99

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

More Specific Codes

I12.0

Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease

I12.9

Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

External Resources

2025 ICD-10 guidelines from CMS.gov