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

Billable ICD-10-CM code, FY2026.

Applicable to

• Hypertensive chronic kidney disease NOS
• Hypertensive renal disease NOS

Use additional code

• code to identify the stage of chronic kidney disease (N18.1-N18.4, N18.9)

Applies from I12 Hypertensive chronic kidney disease

Includes

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

Excludes1 (never code together)

• hypertension due to kidney disease (I15.0, I15.1)
• renovascular hypertension (I15.0)
• secondary hypertension (I15.-)

Excludes2 (not included here)

• acute kidney failure (N17.-)

Risk adjustment (HCC)

• RxHCC V08: HCC 187 — Hypertension

MS-DRG index

Defines the logic of DRG(s) 682-684 in MDC 11.

Approximate ICD-9-CM (GEMs)

• 403.00 Hypertensive chronic kidney disease, malignant, with chronic kidney disease stage I through stage IV, or unspecified (approximate)
• 403.10 Hypertensive chronic kidney disease, benign, with chronic kidney disease stage I through stage IV, or unspecified (approximate)
• 403.90 Hypertensive chronic kidney disease, unspecified, with chronic kidney disease stage I through stage IV, or unspecified (approximate)

Code annotations containing back-references to I12.9

Back-references to I12

• Code Also: I16 Hypertensive crisis ("any identified hypertensive disease (I10-I15, I1A)")
• Code Also: I67.4 Hypertensive encephalopathy ("hypertensive chronic kidney disease (I12.-)")
• Type 2 Excludes: I70.1 Atherosclerosis of renal artery ("atherosclerosis of renal arterioles (I12.-)")
• Code Also: I87.2 Venous insufficiency (chronic) (peripheral) ("hypertensive chronic kidney disease (I12.-)")
• Code First: N18 Chronic kidney disease (CKD) ("hypertensive chronic kidney disease (I12.-, I13.-)")
• Type 1 Excludes: N26 Unspecified contracted kidney ("contracted kidney due to hypertension (I12.-)")
• Type 1 Excludes: N26 Unspecified contracted kidney ("hypertensive nephrosclerosis (arteriolar) (arteriosclerotic) (I12.-)")
• Use Additional: 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")

Diagnosis Index entries for I12.9

• Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › kidney
• Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › kidney › with › stage 1 through stage 4 chronic kidney disease

Nearby codes

• I12 Hypertensive chronic kidney disease
• I12.0 Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
• I12.9 Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease (this code)