ICD-10 I70.1
Billable / Specific HCC v28: 108Atherosclerosis of renal artery
About ICD-10-CM I70.1
ICD-10-CM code I70.1 represents Atherosclerosis of renal artery. This is a billable/specific code in the Circulatory System chapter (block I70). The 2026 edition of ICD-10-CM I70.1 became effective on October 1, 2025.
Coding Tips for I70.1
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I70.1 is a CMS-HCC v28 risk-adjustment code (category 108). To count for the patient Risk Adjustment Factor (RAF), document the diagnosis with MEAT language each calendar year: Monitored, Evaluated, Assessed, Treated. A diagnosis on the problem list alone does not satisfy CMS RADV audit standards. Include the diagnosis in the assessment with current status and current treatment plan.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I70.1. Per CMS ICD-10-CM Tabular 2026.
- Goldblatt's kidney
Type 2 Excludes
Not included here, the excluded code is not part of I70.1, but a patient may have both conditions at the same time. Both codes may be coded together when applicable.
- atherosclerosis of renal arterioles (I12.-)
Medicare Advantage HCC Impact
Capture this diagnosis annually for accurate risk adjustment. Missed HCC captures are the #1 revenue leak in Medicare Advantage risk programs.
Medicare LCD Coverage for I70.1
Local Coverage Determinations (LCDs) from CMS MACs that list I70.1 as a covered diagnosis.
Showing top 10 of 427 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I70.1.
1 Aetna
5 Medicare
CPT Codes Commonly Billed with I70.1
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
- 93979 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 93975 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 93976 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 93978 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 93980 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 93981 CMS LCD: Billing and Coding: Non-Invasive Abdominal / Visceral Vascular Studies CMS LCD
- 36254 CMS LCD: Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography CMS LCD
- 36252 CMS LCD: Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography CMS LCD
- 36247 CMS LCD: Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography CMS LCD
- 75630 CMS LCD: Billing and Coding: Diagnostic Abdominal Aortography and Renal Angiography CMS LCD
Convert I70.1 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| I70.1 | 4401 | 00000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I70.1
Other codes in section I70-I79 (Diseases of arteries, arterioles and capillaries).
ICD-10 I70.1, Billing FAQ
Is ICD-10 code I70.1 billable? +
Yes, I70.1 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to I70.1? +
ICD-10 I70.1 includes: Goldblatt's kidney.
What codes are Type 2 Excludes for I70.1? +
Type 2 Excludes (may be coded together when both conditions exist): atherosclerosis of renal arterioles (I12.-)
Does I70.1 affect Medicare Advantage HCC risk adjustment? +
Yes. I70.1 maps to CMS-HCC v28 category 108. Capture this diagnosis annually for accurate Medicare Advantage risk score.
What CPT codes are commonly billed with I70.1? +
Procedures frequently paired with I70.1 include: 93979, 93975, 93976, 93978, 93980.
What ICD-9 codes does I70.1 map to? +
Per CMS GEMs, I70.1 maps to ICD-9 codes: 4401. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on June 1, 2026.
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