I12 ICD-10-CA code: Hypertensive renal disease
I12 is the ICD-10-CA code for “Hypertensive renal disease” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
I12Hypertensive renal disease
ICD-10-CA · Canada
Index terms
Entries in CIHI’s alphabetical index that lead to I12. Searching the index by the condition the note names is how coders reach this code.
- Arterionephrosclerosis
- Nephropathy, hypertensive
- Fahr Volhard disease (of kidney)
- Nephritis, nephritic, arteriolar
- Bright's, disease, arteriosclerotic
- Uremia, uremic (coma), hypertensive
- Failure, failed, kidney, hypertensive
- Nephritis, nephritic, arteriosclerotic
- Insufficiency, insufficient, vascular, renal
- Failure, failed, kidney, chronic, hypertensive
- Uremia, uremic (coma), complicating hypertension
- Disease, diseased, renovascular (arteriosclerotic)
- Nephritis, nephritic, chronic (with), arteriosclerotic
- Fahr Volhard disease (of kidney), with renal insufficiency
- Disease, diseased, kidney (functional) (pelvis), hypertensive
- Sclerosis, sclerotic, renal, arteriolar (hyaline) (hyperplastic)
- Nephrosclerosis (arteriolar) (arteriosclerotic) (chronic) (hyaline)
- Hypertension, hypertensive (accelerated) (essential) (idiopathic) (primary) (systemic), renal
- Hypertension, hypertensive (accelerated) (essential) (idiopathic) (primary) (systemic), kidney
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), kidney
- Arteriosclerosis, arteriosclerotic (diffuse) (disease) (general) (obliterans) (senile) (with calcification), renal (arterioles)
Notes for I12
As CIHI prints them, with any note I12 takes from the headings above it.
Includes
- Arteriosclerosis of kidneyArteriosclerotic nephritis (chronic)(interstitial)Hypertensive nephropathyHypertensive renal disease NOSNephrosclerosis
Use additional code
Add a code for this detail when the note documents it.
- Use additional code to identify any (chronic) kidney disease (failure) (N18.-, N19) due to hypertension
Excludes
Conditions classified elsewhere.
- Secondary hypertension (I15.-)
- Complicating pregnancy, childbirth and the puerperium (O10-O11) (O13-O16)involving coronary vessels (I20-I25)neonatal hypertension (P29.2)pulmonary hypertension:• primary (I27.0)• secondary (I27.2)From I10-I15 Hypertensive diseases
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)systemic connective tissue disorders (M30-M36)transient cerebral ischaemic attacks and related syndromes (G45.-)From Chapter 9: Diseases of the circulatory system (I00-I99)
Note
- Coding direction for the DAD and NACRS When a diagnosis of hypertension is documented, regardless of significance, Assign, mandatory, a code from the block I10–I15 Hypertensive diseases (refer to examples 1, 2, 4, 5 and 7). Hypertensive heart disease and hypertensive renal disease When there is documentation of a cause-and-effect relationship between a cardiac or renal condition and hypertension, Assign I11 Hypertensive heart disease or I12 Hypertensive renal disease or I13 Hypertensive heart and renal disease (refer to examples 3, 4, 5 and 6). When a “use additional code” instruction is provided at I11, I12 or I13, to identify any associated condition that is due to hypertension (such as congestive heart failure or chronic kidney disease), Assign, mandatory, the additional code and sequence I11, I12 or I13 first (refer to examples 3 and 6). Hypertension with cerebrovascular disease When cerebrovascular disease is present with hypertension, Sequence the code for cerebrovascular disease first (refer to example 7). General notes (apply to all above directive statements) All available documentation, including non-physician documentation, such as documentation by regulated health professionals (e.g., registered nurses), may be used for code assignment. Do not assume a causal relationship; one must be documented. Do not assume a causal relationship when the diagnostic statements on the patient’s record mention both conditions independently. Terminology such as “due to hypertension” or “hypertensive” is used in the classification to link hypertension to the condition. The intent is to assign a code for hypertension when it is noted on routine review of the record, not to conduct an exhaustive search of all ancillary documentation for reference to hypertension. Ensure that codes from categories I10–I13 are never assigned together on the same abstract. Codes from categories I10–I13 are mutually exclusive.From I10-I15 Hypertensive diseases
Where I12 sits
- 1ChapterChapter 9: Diseases of the circulatory system (I00-I99)
- 2Block I10-I15Hypertensive diseases
- 3Valid code I12Hypertensive renal disease
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code I12 mean?
I12 is the ICD-10-CA code for “Hypertensive renal disease” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is I12 in ICD-10-CA?
I12 sits under I10-I15 Hypertensive diseases, within Chapter 9: Diseases of the circulatory system (I00-I99).
What coding notes apply to I12?
ICD-10-CA lists Includes, Use additional code, Excludes, Note notes for I12, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.