I12.9 — Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
I12.9 is a billable, specific ICD-10-CM code for hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease. It is valid for submission on a claim.
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Add a secondary code to capture the detail described below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Hypertensive chronic kidney disease NOS
- Hypertensive renal disease NOS
Risk adjustment
I12.9 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Medicare coverage
I12.9 is named in 36 Medicare coverage policies — 36 listing it as supporting medical necessity. Which of them applies to you depends on your Medicare contractor, and coverage genuinely differs by state.
- A52850Billing and Coding: Cardiac Catheterization and Coronary Angiography
- A53026Billing and Coding: Bariatric Surgery Coverage
- A54923Billing and Coding: Bariatric Surgery for Treatment of Co-Morbidities Conditions Related to Morbid Obesity
- A55336Billing and Coding: Retroperitoneal Ultrasound
How I12.9 is indexed
Coders do not find codes by browsing the tabular list — they look them up in the alphabetic index, under the word the physician wrote. These are the index entries that lead here, so you can see which chart wordings map to I12.9.
- Hypertension, hypertensive›kidney
- Hypertension, hypertensive›kidney›with›stage 1 through stage 4 chronic kidney disease
Related codes at this level
Codes that share I12. If I12.9 is not quite right, the correct code is usually one of these.
Questions about I12.9
- Is I12.9 a billable ICD-10-CM code?
- Yes. I12.9 is a billable, specific ICD-10-CM code and is valid for submission on a claim.
- Where does I12.9 sit in the tabular list?
- Diseases of the circulatory system (I00-I99), in the block Hypertensive diseases (I10-I1A).