ICD-10 I12.9
Billable / SpecificHypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
About ICD-10-CM I12.9
ICD-10-CM code I12.9 represents Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease. This is a billable/specific code in the Circulatory System chapter (block I12). The 2026 edition of ICD-10-CM I12.9 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under I12.9. Per CMS ICD-10-CM Tabular 2026.
- Hypertensive chronic kidney disease NOS
- Hypertensive renal disease NOS
Use Additional Code
When coding I12.9, also report these additional codes when applicable.
- code to identify the stage of chronic kidney disease (N18.1-N18.4, N18.9)
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 I12.9
Local Coverage Determinations (LCDs) from CMS MACs that list I12.9 as a covered diagnosis.
Showing top 10 of 499 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I12.9.
1 Cigna
5 Medicare
CPT Codes Commonly Billed with I12.9
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 I12.9 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 |
|---|---|---|
| I12.9 | 40300 | 10000 |
| I12.9 | 40310 | 10000 |
| I12.9 | 40390 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I12.9
Other codes in section I10-I1A (Hypertensive diseases).
ICD-10 I12.9, Billing FAQ
Is ICD-10 code I12.9 billable? +
Yes, I12.9 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 I12.9? +
ICD-10 I12.9 includes: Hypertensive chronic kidney disease NOS; Hypertensive renal disease NOS.
What CPT codes are commonly billed with I12.9? +
Procedures frequently paired with I12.9 include: 93979, 93975, 93976, 93978, 93980.
What ICD-9 codes does I12.9 map to? +
Per CMS GEMs, I12.9 maps to ICD-9 codes: 40300, 40310, 40390. 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 July 16, 2026.
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