Alphabetic Index FY2027

I11

Hypertensive heart disease

FY2027Chapter 9: Diseases of the circulatory system/I10–I1A Hypertensive diseases

Non-billable headerNot valid on its own. Use one of the more specific codes under it.

I11 is a non-billable ICD-10-CM code category for hypertensive heart disease. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are I11.0 Hypertensive heart disease with heart failure and I11.9 Hypertensive heart disease without heart failure. Its coding notes include a Use additional code instruction, 2 Excludes1 entries and 11 Excludes2 entries.

Guidelines tips

From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.

The classification presumes hypertension is related to heart and kidney conditions unless the provider documents they are unrelated.

Guidelines I.C.9.aHypertension: presumed link to heart and kidney diseaseRead the official text

Hypertension with heart disease and CKD goes to I13, not I11 or I12. An N18 code is added as a secondary code to give the CKD stage.

Guidelines I.C.9.a.2; I.C.9.a.3Hypertensive heart disease and chronic kidney diseaseRead the official text

Hypertension with heart failure or certain other heart conditions is assigned to category I11, with an additional code for the heart condition, unless the provider documents they are unrelated.

Guidelines I.C.9.a.1Hypertension with heart diseaseRead the official text

Use additional code

Add the listed code as a secondary code, if known.

Also from chapter/block level (6 notes)
Inherited from I10–I1A Hypertensive diseases
  • 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)

Excludes1

Not coded here. The listed conditions generally should not be reported together.

Also from chapter/block level (2 notes)
Inherited from I10–I1A Hypertensive diseases
  • neonatal hypertension (P29.2)
  • primary pulmonary hypertension (I27.0)

Excludes2

Not included here. Both codes may be reported if the patient has both conditions.

Also from chapter/block level (11 notes)
Inherited from I10–I1A Hypertensive diseases
  • hypertensive disease complicating pregnancy, childbirth and the puerperium (O10-O11, O13-O16)
Inherited from Chapter 9 Diseases of the circulatory system
  • 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.-)

Includes

Further defines or gives examples of the content of the category.

This code

More specific codes under I11 2