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    v1.0.28
    OpenPayerBilling CodesHypertensive diseasesICD-10-CM i12-hypertensive-chronic-kidney-disease
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    ICD-10-CM Code For Hypertensive Chronic Kidney Disease: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group I12 includes diagnoses that combine hypertensive disease with chronic kidney disease, specifying the presence and stage of kidney impairment caused by hypertension. These ICD-10-CM diagnosis codes are used to document clinical scenarios where hypertension has led to chronic renal damage, capturing disease severity and organ involvement for care continuity and risk stratification. Accurate coding within the ICD-10-CM I12 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM I12: Hypertensive Chronic Kidney Disease Overview

    The ICD-10-CM I12 group represents diagnoses combining hypertension with chronic kidney disease affecting the renal system. These codes capture the relationship between long-standing elevated blood pressure and progressive kidney damage, including stated stages of chronic kidney disease when documented. Accurate coding is important for complete clinical records and supports appropriate reimbursement by reflecting disease severity and organ involvement.

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    When to Use

    Use a code from this group when a medical record explicitly documents both hypertension and chronic kidney disease and the clinician indicates the hypertension is related to the kidney disease. Apply the code that corresponds to the documented stage of chronic kidney disease and any specified acute components if present.

    ICD-10-CM Codes

    2 rows

    ICD-10-CM CodeDescription
    I12.0Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal disease
    I12.9Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease

    DRG Codes

    8 rows

    DRG CodeDescription
    008Simultaneous Pancreas and Kidney Transplant
    019Simultaneous Pancreas and Kidney Transplant with Hemodialysis
    673Other Kidney and Urinary Tract Procedures with MCC
    674Other Kidney and Urinary Tract Procedures with CC
    675Other Kidney and Urinary Tract Procedures without CC/MCC
    682Renal Failure with MCC
    683Renal Failure with CC
    684Renal Failure without CC/MCC

    Typical Clinical Scenarios

    • An older adult with long-standing hypertension presents to primary care for routine follow-up and is found to have progressively reduced estimated glomerular filtration rate (eGFR) consistent with stage 3 chronic kidney disease on repeat testing and persistent proteinuria. The patient reports no acute symptoms but has uncontrolled blood pressure despite multiple antihypertensive medications, and the clinician documents that the kidney disease is attributable to hypertension. Typical codes: I12.9
    • A middle-aged patient is admitted from the emergency department with hypertensive urgency and new-onset worsening renal function with fluid overload and rising creatinine; prior records show chronic hypertension. In the inpatient setting, the team attributes the acute decline in renal function to long-standing hypertension causing chronic kidney disease with current exacerbation, and a hypertensive chronic kidney disease code is assigned. Typical codes: I12.0, I12.9
    • A patient with end-stage renal disease on hemodialysis and a history of poorly controlled hypertension is seen in the nephrology clinic for management of dialysis access issues; medical record notes that the underlying cause of the patient’s chronic kidney disease is hypertensive nephrosclerosis. Because the CKD is due to hypertension, a hypertensive chronic kidney disease diagnosis from this group is recorded as a comorbid condition. Typical codes: I12.0

    Related Codes

    I10-ESSENTIAL-PRIMARY-HYPERTENSION

    ICD-10-CM Code For Essential (Primary) Hypertension: Group Overview

    I11-HYPERTENSIVE-HEART-DISEASE

    ICD-10-CM Code For Hypertensive Heart Disease: Group Overview

    I13-HYPERTENSIVE-HEART-AND-CHRONIC-KIDNEY-DISEASE

    ICD-10-CM Code For Hypertensive Heart And Chronic Kidney Disease: Group Overview

    I15-SECONDARY-HYPERTENSION

    ICD-10-CM Code For Secondary Hypertension: Group Overview

    I16-HYPERTENSIVE-CRISIS

    ICD-10-CM Code For Hypertensive Crisis: Group Overview

    I1A-OTHER-HYPERTENSION

    ICD-10-CM Code For Other Hypertension: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
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