I15.0 ICD-10-CM Code: Renovascular hypertension

Code

I15.0

Description

Renovascular hypertension

HCC (V28)

No CMS-HCC V28 mapping

RAF reference coefficient

—

Billable

Yes

Payment year

2026

HCC Category Mapping

These are source-labeled model coefficients, not member totals. A category may still be removed by hierarchy or model cleanup rules. Weights are not directly comparable across models: CMS-HCC V28 and V24 use Community, Non-Dual, Aged; ESRD uses the dialysis continuing-enrollee model; RxHCC is the Part D continuing-enrollee, non-low-income, aged weight (a larger scale than CMS-HCC). ACA/HHS has no single weight — it varies by metal level. Actual per-patient RAF contribution depends on member context, hierarchy and cleanup rules, interactions, and the model year used by the payer. V28 is the CMS-HCC model phased in over payment years 2024–2026; V24 remains available for historical review.

Work I15.0 in the Code Book — tabular path, V28 RAF reference, and MEAT checklist →

MEAT review for I15.0

What This Code Means

HCC Buddy maintains structured V28 and V24 mapping, source-labeled coefficient references, and MEAT documentation criteria for I15.0 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.

Coding Tips

• •I15.0 is a secondary hypertension code; document the specific renal artery stenosis or narrowing to support this diagnosis
• •Distinguish from essential hypertension (I10) by confirming the renovascular cause is documented

Clinical Significance

Renovascular hypertension is caused by narrowing of the renal arteries (renal artery stenosis), leading to activation of the renin-angiotensin-aldosterone system and resulting in secondary hypertension. It is an important treatable cause of hypertension that may be amenable to interventional procedures. Distinguishing secondary from essential hypertension has implications for treatment approach.

Documentation Requirements

• ✓Provider documentation explicitly identifying renovascular hypertension or renal artery stenosis as the cause
• ✓Imaging evidence of renal artery stenosis (duplex ultrasound, CTA, MRA, or conventional angiography)
• ✓Blood pressure readings
• ✓Renal function assessment (eGFR, creatinine)
• ✓Current antihypertensive medication regimen
• ✓Any interventional procedures performed or planned (angioplasty, stenting)
• ✓Underlying etiology if known (atherosclerotic vs. fibromuscular dysplasia)

Commonly Confused Codes

• •I10: Essential (primary) hypertension (use when no secondary cause is identified)
• •I15.1: Hypertension secondary to other renal disorders (use for non-vascular renal causes)
• •I15.8: Other secondary hypertension (use for other identified secondary causes)
• •I70.1: Atherosclerosis of renal artery (may be coded additionally to identify the underlying vascular disease)
• •I77.1: Stricture of artery (non-specific; use I15.0 when renal artery stenosis causes hypertension)

Child Codes