Hypertensive chronic kidney disease
In Hypertensive diseases (I10-I1A), chapter 9: Diseases of the Circulatory System
2 billable codes under I12: 1 is a CC; 1 map to HCC 326 (Chronic Kidney Disease, Stage 5).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.
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Instructional notes
Includes: conditions that are coded here
Excludes1: not coded here, use a different code
Excludes2: not included here, code separately if applicable
- acute kidney failure (N17.-)
Also applies, from Hypertensive diseases (I10-I1A)
These notes sit on I10-I1A and apply to every code under it, including I12.
Excludes1: not coded here, use a different code
Excludes2: not included here, code separately if applicable
Official coding guidelines
From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.
- Section I.C.9.a Hypertension (page 50), covers I12
Presume hypertension is linked to heart disease and CKD unless documented as unrelated: use I11, I12, or I13 with additional I50 or N18 codes as directed. Other conditions need provider-documented linkage to be coded as related.
Other Chapter 9 topics:
All codes under I12
I12 can't be used on a claim. Pick a billable code below; grey headings group them.
I12 MS-DRGs
As the principal diagnosis, the billable codes under I12 group to MS-DRG 682, 683, or 684 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.
- DRG 682 Renal Failure with MCC (1 of 2 codes)
- DRG 683 Renal Failure with CC (1 of 2 codes)
- DRG 684 Renal Failure without CC/MCC (1 of 2 codes)
Other codes that refer to I12
Notes on these codes point to I12.
- I13 Includes: any condition in I11.- with any condition in I12.-
- I67.4 Code Also: hypertensive chronic kidney disease (I12.-)
- I70.1 Excludes2: atherosclerosis of renal arterioles (I12.-)
- I87.2 Code Also: hypertensive chronic kidney disease (I12.-)
- N00-N08 Excludes1: hypertensive chronic kidney disease (I12.-)
- N18 Code First: hypertensive chronic kidney disease (I12.-, I13.-)
- N26 Excludes1: contracted kidney due to hypertension (I12.-)
- N26 Excludes1: hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-)
- O10.2 Use Additional Code: code from I12 to identify the type of hypertensive chronic kidney disease
- O10.2 Includes: Any condition in I12 specified as a reason for obstetric care during pregnancy, childbirth or the puerperium
About the condition
Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.
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 more about chronic kidney disease on MedlinePlusHigh Blood Pressure
Blood pressure is the force of your blood pushing against the walls of your arteries. Each time your heart beats, it pumps blood into the arteries. Your blood pressure is highest when your heart beats, pumping the blood. This is called systolic pressure. When your heart is at rest, between beats, your blood pressure falls. This is called diastolic pressure.
Read more about high blood pressure on MedlinePlusCode history
Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.