DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

I15 Secondary hypertension

  • Header · not billable

I15 is not billable. The category heads 5 billable codes in FY2027: the 5 codes directly below it.

ICD-10 code by name

What is the ICD-10 code for secondary hypertension, unspecified?
Secondary hypertension ICD-10 code: I15.9 Secondary hypertension, unspecified. Search ICD-10 for secondary hypertension
What is the ICD-10 code for renovascular hypertension?
Renovascular hypertension ICD-10 code: I15.0 Renovascular hypertension. Search ICD-10 for renovascular hypertension

Where it sits

  1. Chapter 9 Diseases of the circulatory system (I00-I99)
  2. I10-I1A Hypertensive diseases (I10-I1A)
  3. I15 Secondary hypertension
Billable codes
5
Subdivisions
5
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
14

Codes in I15

  1. I15.0
    Renovascular hypertension
    Billable
  2. I15.1
    Hypertension secondary to other renal disorders
    Billable
  3. I15.2
    Hypertension secondary to endocrine disorders
    Billable
  4. I15.8
    Other secondary hypertension
    Billable
  5. I15.9
    Secondary hypertension, unspecified
    Billable

Sources of each column.

Instructions

At I15

Excludes1

  • postprocedural hypertension (I97.3) I97.3

Excludes2

  • secondary hypertension involving vessels of brain (I60-I69) I60 I69
  • secondary hypertension involving vessels of eye (H35.0-) H35.0

Code also

  • underlying condition

Notes that also apply

Block I10-I1A instructions (Excludes1 2, Excludes2 1, Use additional code 6): printed on the block page.

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

Index entries

  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)renovascular → I15.0
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NEC → I15.9
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due torenovascular disorders → I15.0
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due torenal disorders NEC → I15.1
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due toendocrine disorders → I15.2
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due topheochromocytoma → I15.2
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due tospecified disease NEC → I15.8
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECspecified NEC → I15.8
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)due torenal disorders NECarterial → I15.0
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECdue torenovascular disorders → I15.0
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECdue torenal disorders NEC → I15.1
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECdue toendocrine disorders → I15.2
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECdue topheochromocytoma → I15.2
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)secondary NECdue torenal disorders NECarterial → I15.0

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy