ICD10BillableValid for clinical use
ICD-10 Code I13.0: Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease
Reviewed by HealthAssure Clinical TeamUpdated 26 May 2026
What is this code?
ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the circulatory system (I00-I99).
đź“‹Clinical overview
This ICD-10 code is commonly used when documentation describes elevated blood pressure or hypertensive disease. The most accurate code depends on whether the condition is primary, secondary, or linked with heart or kidney involvement.
When is it used?
- May be used when a clinician documents hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney disease in a patient's medical record.
- May appear in hospital records, claims, referrals, and clinical documentation.
- This code can be used as a clinically usable diagnosis entry in standardized coding workflows.
What it does not mean
- A code alone does not explain severity, treatment plan, or outcome.
- A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
đź©şClinical context
When commonly used
- Primary care, cardiology, nephrology, and pre-operative documentation where blood pressure disease is part of the active problem list.
- Chronic disease follow-up and risk-adjustment workflows where hypertension status affects longitudinal care planning.
Common management context
- Clinical follow-up often includes blood-pressure measurement, medication review, kidney-risk assessment, and cardiovascular risk management.
- Documentation becomes more specific when the chart links hypertension with heart failure, chronic kidney disease, or another secondary cause.
- Specialist context already linked on this page includes Cardiologist, General Physician, ENT Specialist, Urologist.
🔍Key distinctions
Important notes
- ICD-10 hypertension coding is often broader than the actual treatment plan; the exact code depends on whether associated heart or kidney disease is documented.
- Secondary hypertension and hypertensive heart or kidney disease generally require more specific codes than uncomplicated essential hypertension.
- When hypertension is documented with heart or kidney involvement, the linked disease context usually affects code specificity.
Related codes to consider
I13.1Hypertensive heart and chronic kidney disease without heart failure
Related hypertension-family ICD-10 code; documentation often becomes more specific when heart, kidney, or secondary-cause detail is present.
I13.2Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal disease
Related hypertension-family ICD-10 code; documentation often becomes more specific when heart, kidney, or secondary-cause detail is present.
Code hierarchy
chapter
9Diseases of the circulatory system (I00-I99)
block
I10-I1AHypertensive diseases
category
I13Hypertensive heart and chronic kidney disease
currentI13
Official coding notes
Applicable to
- code to identify type of heart failure (I50.-)
- code to identify stage of chronic kidney disease (N18.1-N18.4, N18.9)
Use additional code
- code to identify type of heart failure (I50.-)
- code to identify stage of chronic kidney disease (N18.1-N18.4, N18.9)
Where you may see this code
You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.
Related specialists
CardiologistGeneral PhysicianENT SpecialistUrologist
Related codes
Sibling codes
Coverage-related procedures and services
CPT 93350high
ECHOCARDIOGRAPHY, TRANSTHORACIC, REAL-TIME WITH IMAGE DOCUMENTATION (2D), INCLUDES M-MODE RECORDING, WHEN PERFORMED, DURING REST AND CARDIOVASCULAR STRESS TEST USING TREADMILL, BICYCLE EXERCISE AND/OR PHARMACOLOGICALLY INDUCED STRESS, WITH INTERPRETATION AND REPORT;
Source: CMS coverage guidance
CPT 93351high
ECHOCARDIOGRAPHY, TRANSTHORACIC, REAL-TIME WITH IMAGE DOCUMENTATION (2D), INCLUDES M-MODE RECORDING, WHEN PERFORMED, DURING REST AND CARDIOVASCULAR STRESS TEST USING TREADMILL, BICYCLE EXERCISE AND/OR PHARMACOLOGICALLY INDUCED STRESS, WITH INTERPRETATION AND REPORT; INCLUDING PERFORMANCE OF CONTINUOUS ELECTROCARDIOGRAPHIC MONITORING, WITH SUPERVISION BY A PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL
Source: CMS coverage guidance
CPT 83880high
NATRIURETIC PEPTIDE
Source: CMS coverage guidance
CPT 93352high
USE OF ECHOCARDIOGRAPHIC CONTRAST AGENT DURING STRESS ECHOCARDIOGRAPHY (LIST SEPARATELY IN ADDITION TO CODE FOR PRIMARY PROCEDURE)
Source: CMS coverage guidance
CPT 93018high
CARDIOVASCULAR STRESS TEST USING MAXIMAL OR SUBMAXIMAL TREADMILL OR BICYCLE EXERCISE, CONTINUOUS ELECTROCARDIOGRAPHIC MONITORING, AND/OR PHARMACOLOGICAL STRESS; INTERPRETATION AND REPORT ONLY
Source: CMS coverage guidance
CPT 93016high
CARDIOVASCULAR STRESS TEST USING MAXIMAL OR SUBMAXIMAL TREADMILL OR BICYCLE EXERCISE, CONTINUOUS ELECTROCARDIOGRAPHIC MONITORING, AND/OR PHARMACOLOGICAL STRESS; SUPERVISION ONLY, WITHOUT INTERPRETATION AND REPORT
Source: CMS coverage guidance
Mapped diagnoses and classifications
Coding guidelines
Compatibility
Legacy and official ICD code match exactly.
Legacy codes
I13.0
Common synonyms
Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseHypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or chronic kidney disease
Frequently asked questions
About this content
This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.