DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Block · Chapter 9

I10-I1A Hypertensive diseases (I10-I1A)

Block I10-I1A groups 7 categories with 18 billable codes in FY2027.

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I10-I1A Hypertensive diseases (I10-I1A)

Neighbouring blocks

Categories
7
Billable codes
18
CC codes
6
MCC codes
0
HCC V28 codes
5
New FY2027
0

Categories in I10-I1A

  • I10

    Essential (primary) hypertension

    Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) → I10

    • Billable, no subdivisions
  • I11

    Hypertensive heart disease

    Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)heart (disease) (conditions in I51.4-I51.9 due to hypertension) → I11.9

    • 2 billable codes
    • 1 with HCC
  • I12

    Hypertensive chronic kidney disease

    Fahr Volhard disease (of kidney) → I12.-

    • 2 billable codes
    • 1 CC
    • 1 with HCC
  • I13

    Hypertensive heart and chronic kidney disease

    Insufficiency, insufficientcardiorenal, hypertensive → I13.2

    • 4 billable codes
    • 3 CC
    • 3 with HCC
  • I15

    Secondary hypertension

    Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)renovascular → I15.0

    • 5 billable codes
  • I16

    Hypertensive crisis

    Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)crisis → I16.9

    • 3 billable codes
    • 2 CC
  • I1A

    Other hypertension

    Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)resistant (apparent treatment) (treatment) (true) → I1A.0

    • 1 billable code

Index main terms

  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic) → I10, I11, I12, I13, I15, I16, I1A (32 entries)
  • Disease, diseased → I12 (3 entries)
  • Failure, failed → I12, I13 (2 entries)
  • Fahr Volhard disease (of kidney) → I12 (1 entry)
  • Insufficiency, insufficient → I13 (1 entry)

Block instructions

Excludes1

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

Excludes2

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

Use additional code

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

Notes that also apply

Chapter 9 instructions (Excludes2 10): printed on the chapter 9 page.