2027 ICD-10-CM Diagnosis Code I12Hypertensive chronic kidney disease

ICD-10-CM Codes›I00–I99›I10-I1A›I12

ICD-10-CM I12
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

I12 is a non-billable ICD-10-CM category code for hypertensive chronic kidney disease, so it cannot be submitted on claims. Use a more specific code from this category instead, such as I12.0 and I12.9.

Code Identity

ICD-10-CM Code
I12
Billable Status
No — Non-Billable Category
Code Describes
Hypertensive chronic kidney disease
Short Description
Hypertensive chronic kidney disease
Same as the full description in the CMS dataset.
Chapter
I10-I1A
Hypertensive diseases

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI10-I1AHypertensive diseases
CategoryI12Hypertensive chronic kidney disease
This CodeI12Hypertensive chronic kidney disease

Specific Coding for Hypertensive chronic kidney diseaseOverview

Non-specific codes like I12 require more characters. Use one of these billable codes instead:

  • Use I12.0 for Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease

  • Use I12.9 for Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to I12: its own notes plus those printed at block I10-I1A and Chapter 9. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

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

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

On I12 itself
  • hypertension due to kidney disease (I15.0, I15.1)
  • renovascular hypertension (I15.0)
  • secondary hypertension (I15.-)
From Block I10-I1A Hypertensive diseases applies to 18 codes
  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

On I12 itself
  • acute kidney failure (N17.-)
From Block I10-I1A Hypertensive diseases applies to 18 codes
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
From Chapter 9 (I00-I99) Diseases of the circulatory system applies to 1,433 codes
  • 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.-)

Use Additional Code

Add a second code, after this one, to fully describe the condition.

From Block I10-I1A Hypertensive diseases applies to 18 codes
  • code to identify:
  • exposure to environmental tobacco smoke (Z77.22)
  • history of tobacco dependence (Z87.891)
  • occupational exposure to environmental tobacco smoke (Z57.31)
  • tobacco dependence (F17.-)
  • tobacco use (Z72.0)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name I12, its category, or a range that includes it.

Includes 1

These notes mention I12.

  • I13 Hypertensive heart and chronic kidney disease
    any condition in I11.- with any condition in I12.-

Applicable To 1

These notes mention I12.

  • O10.2 Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium
    Any condition in I12 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium

Excludes1 3

These codes carry an Excludes1 note naming I12: they are not reported together with it, unless the two conditions are unrelated.

  • Block N00-N08 Glomerular diseases
    hypertensive chronic kidney disease (I12.-)
  • N26 Unspecified contracted kidney
    contracted kidney due to hypertension (I12.-)
  • N26 Unspecified contracted kidney
    hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-)

Excludes2 1

These codes carry an Excludes2 note naming I12: its condition is not part of those codes, and both may be reported when the patient has both.

  • I70.1 Atherosclerosis of renal artery
    atherosclerosis of renal arterioles (I12.-)

Code First 1

These codes say to code first a condition named in the note, and I12 is one of the conditions named.

  • N18 Chronic kidney disease (CKD)
    hypertensive chronic kidney disease (I12.-, I13.-)

Use Additional Code 3

These codes say to use an additional code from the note, and I12 is one of the codes named.

  • O10.2 Pre-existing hypertensive chronic kidney disease complicating pregnancy, childbirth and the puerperium
    code from I12 to identify the type of hypertensive chronic kidney disease
  • G31.84 Mild cognitive impairment of uncertain or unknown etiology
    hypertension (I10-I1A) names I10-I1A, which includes this code
  • Block I60-I69 Cerebrovascular diseases
    hypertension (I10-I1A) names I10-I1A, which includes this code

Code Also 5

These codes say I12 may also be needed to fully describe the condition. The note gives no sequencing direction.

  • I67.4 Hypertensive encephalopathy
    hypertensive chronic kidney disease (I12.-)
  • I87.2 Venous insufficiency (chronic) (peripheral)
    hypertensive chronic kidney disease (I12.-)
  • I16 Hypertensive crisis
    any identified hypertensive disease (I10-I15, I1A) names I10-I15, which includes this code
  • Block I20-I25 Ischemic heart diseases
    the presence of hypertension (I10-I1A) names I10-I1A, which includes this code
  • Z15.3 Genetic susceptibility to kidney disease
    if applicable, hypertension (I10-I1A) names I10-I1A, which includes this code

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Patient EducationClinical

Chronic Kidney Disease

You have two kidneys, each about the size of your fist. Their main job is to filter your blood. They remove wastes and extra water, which become urine. They also keep the body's chemicals balanced, help control blood pressure, and make hormones.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About I12Overview

What is the ICD-10 code for hypertensive chronic kidney disease?

I12 is the ICD-10-CM category for hypertensive chronic kidney disease, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is I12 (Hypertensive chronic kidney disease) a billable code?

No. This is a category header that groups the codes for hypertensive chronic kidney disease, and headers cannot be submitted on claims. Claims for hypertensive chronic kidney disease need a more specific code from this category, such as I12.0 and I12.9.

Can I12 be reported with I15.0?

Not as a rule. The Excludes1 note on I12 lists "hypertension due to kidney disease (I15.0, I15.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).