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  5. Hypertensive chronic kidney disease (I12)

Hypertensive chronic kidney disease (I12)

Hypertensive chronic kidney disease codes in the I12 category are used to identify kidney damage caused by long-term high blood pressure. These codes distinguish between different stages of chronic kidney disease linked to hypertension, helping to specify the severity of the patient's condition.

The main code I12 covers hypertensive chronic kidney disease broadly. More detailed codes like I12.0 indicate hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease (ESRD), which is also called “end stage renal failure due to hypertension” or “hypertensive renal failure.” This code includes situations where dialysis is required due to hypertension-related kidney failure. The code I12.9 refers to hypertensive chronic kidney disease with stage 1 through 4 chronic kidney disease, or unspecified stages, covering terms such as “chronic kidney disease due to benign hypertension,” “renal hypertension,” and “nephrosclerosis.” These codes specifically support accurate documentation and coding of kidney disease complications arising from hypertension, which is vital for treatment planning and reporting.

Instructional Notations

Includes

This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

  • any condition in N18 N26
  • arteriosclerosis of kidney
  • arteriosclerotic nephritis (chronic) (interstitial)
  • hypertensive nephropathy
  • nephrosclerosis

Type 1 Excludes

A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

  • hypertension due to kidney disease I15.0 I15.1
  • renovascular hypertension I15.0
  • secondary hypertension I15

Type 2 Excludes

A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.

  • acute kidney failure N17

Clinical Terms

The following clinical terms provide additional context, helping users better understand the clinical background and common associations for each diagnosis listed in this section. Including related terms alongside ICD-10-CM codes supports coders, billers, and healthcare professionals in improving accuracy, enhancing documentation, and facilitating research or patient education.

Nephrosclerosis

Hardening of the KIDNEY due to infiltration by fibrous connective tissue (FIBROSIS), usually caused by renovascular diseases or chronic HYPERTENSION. Nephrosclerosis leads to renal ISCHEMIA.