All ICD10 Codes
I13Not billable, use a more specific code below

Hypertensive heart and chronic kidney disease

In Hypertensive diseases (I10-I1A), chapter 9: Diseases of the Circulatory System

4 billable codes under I13: 3 are a CC; 3 map to HCC 226 (Heart Failure, Except End-Stage and Acute), 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

  • any condition in I11.- with any condition in I12.-
  • cardiorenal disease
  • cardiovascular renal disease

Also applies, from Hypertensive diseases (I10-I1A)

These notes sit on I10-I1A and apply to every code under it, including I13.

Excludes1: not coded here, use a different code

  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)

Excludes2: not included here, code separately if applicable

  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Use additional code: add a second code for this, listed after this one

  • 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)

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 I13

    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:

Read Section I.C.9 (page 50)

All codes under I13

I13 can't be used on a claim. Pick a billable code below; grey headings group them.

I13 MS-DRGs

As the principal diagnosis, the billable codes under I13 group to these 11 MS-DRGs (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to I13

Notes on these codes point to I13.

  • I50 Code First: heart failure due to hypertension with chronic kidney disease (I13.-)
  • I51.5 Excludes1: myocardial degeneration due to hypertension and chronic kidney disease (I13.-)
  • I51.7 Excludes1: cardiomegaly due to hypertension and chronic kidney disease (I13.-)
  • I67.4 Code Also: hypertensive heart and chronic kidney disease (I13.-)
  • I87.2 Code Also: hypertensive heart and chronic kidney disease (I13.-)
  • N18 Code First: hypertensive chronic kidney disease (I12.-, I13.-)
  • O10.3 Use Additional Code: code from I13 to identify the type of hypertensive heart and chronic kidney disease
  • O10.3 Includes: Any condition in I13 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 MedlinePlus

High 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 MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.