I10-I1A

Hypertensive diseases

Block coding notes

Excludes 1 never together · Excludes 2 may co-exist

Excludes 1

neonatal hypertension (P29.2) primary pulmonary hypertension (I27.0)

Excludes 2

hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)

Use additional

code to identify: exposure to environmental tobacco smoke (Z77.22) history of tobacco dependence (Z87.891) occupational exposure to environmental tobacco smoke (Z57.31) tobacco dependence (F17.-) tobacco use (Z72.0)

Codes in this block

25 codes

Billableusable codeNon-billableheader / grouping codeRisk-adjusting

I10Essential (primary) hypertensionBillable
I11Hypertensive heart diseaseNon-billable
I11.0Hypertensive heart disease with heart failureBillable
I11.9Hypertensive heart disease without heart failureBillable
I12Hypertensive chronic kidney diseaseNon-billable
I12.0Hypertensive chronic kidney disease with stage 5 chronic kidney disease or end stage renal diseaseBillable
I12.9Hypertensive chronic kidney disease with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
I13Hypertensive heart and chronic kidney diseaseNon-billable
I13.0Hypertensive heart and chronic kidney disease with heart failure and stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
I13.1Hypertensive heart and chronic kidney disease without heart failureNon-billable
I13.10Hypertensive heart and chronic kidney disease without heart failure, with stage 1 through stage 4 chronic kidney disease, or unspecified chronic kidney diseaseBillable
I13.11Hypertensive heart and chronic kidney disease without heart failure, with stage 5 chronic kidney disease, or end stage renal diseaseBillable
I13.2Hypertensive heart and chronic kidney disease with heart failure and with stage 5 chronic kidney disease, or end stage renal diseaseBillable
I15Secondary hypertensionNon-billable
I15.0Renovascular hypertensionBillable
I15.1Hypertension secondary to other renal disordersBillable
I15.2Hypertension secondary to endocrine disordersBillable
I15.8Other secondary hypertensionBillable
I15.9Secondary hypertension, unspecifiedBillable
I16Hypertensive crisisNon-billable
I16.0Hypertensive urgencyBillable
I16.1Hypertensive emergencyBillable
I16.9Hypertensive crisis, unspecifiedBillable
I1AOther hypertensionNon-billable
I1A.0Resistant hypertensionBillable

Official Guidelines for I10-I1A

FY 2026 ›

I.C.9Chapter-specific guidanceChapter 9: Diseases of the Circulatory System (I00-I99)

Subsections

I.C.9.aHypertension
I.C.9.bAtherosclerotic Coronary Artery Disease and Angina
I.C.9.cIntraoperative and Postprocedural Cerebrovascular Accident
I.C.9.dSequelae of Cerebrovascular Disease
I.C.9.eAcute myocardial infarction (AMI)

Sections that reference codes in I10-I1A

I.C.9.a.1)Hypertension with Heart Disease
I11
I.C.9.a.2)Hypertensive Chronic Kidney Disease
I12
I.C.9.a.3)Hypertensive Heart and Chronic Kidney Disease
I13
I.C.9.a.5)Hypertensive Retinopathy
I10 – I15
I.C.9.a.6)Hypertension, Secondary
I15
I.C.9.a.8)Hypertension, Controlled
I10-I15
I.C.9.a.9)Hypertension, Uncontrolled
I10-I15
I.C.9.a.10)Hypertensive Crisis
I16

Showing 8 of 9 sections that reference this range. Browse all FY 2026 guidelines.