ICD-10 I12.0
Billable / Specific CCHypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
About ICD-10-CM I12.0
ICD-10-CM code I12.0 represents Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease. This is a billable/specific code in the Circulatory System chapter (block I12). The 2026 edition of ICD-10-CM I12.0 became effective on October 1, 2025.
Coding Tips for I12.0
Specialist guidance from the PayerReady Medical Coding Team. Specificity warnings, HCC capture rules, sequencing notes.
I12.0 is designated CC for MS-DRG grouping. On inpatient claims, this code can shift the DRG to the with-CC variant when documented as a present-on-admission secondary diagnosis. Hospital CDI programs flag CC opportunities during chart review. Failure to capture this code may leave 30 to 80 percent of the inpatient stay revenue unrealized.
Use Additional Code
When coding I12.0, also report these additional codes when applicable.
- code to identify the stage of chronic kidney disease (N18.5, N18.6)
Inpatient DRG Impact, CC
codes Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease. As a Complication/Comorbidity (CC), this contributes to DRG severity adjustment when documented alongside the principal diagnosis.
Medicare LCD Coverage for I12.0
Local Coverage Determinations (LCDs) from CMS MACs that list I12.0 as a covered diagnosis.
Showing top 10 of 549 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing I12.0.
2 Cigna
5 Medicare
CPT Codes Commonly Billed with I12.0
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 I12.0 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 |
|---|---|---|
| I12.0 | 40301 | 10000 |
| I12.0 | 40311 | 10000 |
| I12.0 | 40391 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To I12.0
Other codes in section I10-I1A (Hypertensive diseases).
ICD-10 I12.0, Billing FAQ
Is ICD-10 code I12.0 billable? +
Yes, I12.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
Is I12.0 a CC or MCC for inpatient DRG? +
Yes, this code is designated as CC. Documenting as a secondary diagnosis on inpatient claims can shift the DRG to a higher-weighted category.
What CPT codes are commonly billed with I12.0? +
Procedures frequently paired with I12.0 include: 93979, 93975, 93976, 93978, 93980.
What ICD-9 codes does I12.0 map to? +
Per CMS GEMs, I12.0 maps to ICD-9 codes: 40301, 40311, 40391. 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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