I10

Billable

ChapterI00–I99

Rankcategory

Official Description

Essential (primary) hypertension

Metadata & Insights

•Billable/specific code (valid for reimbursement).
•Chapter 9: Diseases of the Circulatory System (I00-I99).

CH9 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
systemic connective tissue disorders (M30-M36)
transient cerebral ischemic attacks and related syndromes (G45.-)

I10-I1A Parent Instructions

Excludes1(Not coded here. Use a different code.)

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

Excludes2(Not included here. Code separately if applicable.)

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

Use Additional Code

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)

Instructional Notes

Includes

high blood pressure
hypertension (arterial) (benign) (essential) (malignant) (primary) (systemic)

Excludes1(Not coded here. Use a different code.)

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

Excludes2(Not included here. Code separately if applicable.)

essential (primary) hypertension involving vessels of brain (I60-I69)
essential (primary) hypertension involving vessels of eye (H35.0-)

Clinical Hierarchy

BillableHas subcodes

CH9Diseases of the circulatory system (I00-I99)

I10-I1AHypertensive diseases (I10-I1A)

I10Essential (primary) hypertensionBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to I10:

Hypertensive diseases (I10-I1A)

View context instructions

chapterCH9

Diseases of the circulatory system (I00-I99)

View context instructions

Code History

FY 2016: Superseded by I16.0
FY 2016: Superseded by I16.1
FY 2016: Superseded by I16.9

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

Hypertension with MCC

Hypertension without MCC

Cross Reference

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