ICD-10-CM 2027
ICD-10 code for kidney hypertension
Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
From the official ICD-10-CM alphabetic index entry “Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) › kidney”. Page updated September 29, 2026.
About coding kidney hypertension
The ICD-10-CM code for kidney hypertension is I12.9 (Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease). The official index lists 2 more specific codes, so check the documentation for details such as type, cause, site or severity before settling on I12.9.
Within I12, choose I12.9 (with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease) only when documentation doesn't support a more specific option: with stage 5 chronic kidney disease or end stage renal disease (I12.0).
Use an additional code to identify the stage of chronic kidney disease (N18.1-N18.4, N18.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
More specific kidney hypertension codes (official index)
- with
- heart disease
- stage 5 chronic kidney disease (CKD) or end stage renal disease (ESRD) I12.0 — Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
- stage 1 through stage 4 chronic kidney disease I12.9 — Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
Common questions about kidney hypertension ICD-10 codes
What is the ICD-10 code for kidney hypertension?
- I12.9 — Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease. More specific codes apply when the documentation supports them: I12.0, I12.9.
Is I12.9 billable?
- Yes. I12.9 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I12.9 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I12.9 as a principal diagnosis.
Is I12.9 a CC or MCC?
- No. I12.9 is neither a CC nor an MCC under MS-DRG v44.0.