DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O13 Gestational [pregnancy-induced] hypertension without significant proteinuria

  • Header · not billable

O13 is not billable. The category heads 6 billable codes in FY2027: the 6 codes directly below it.

Index → code

  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)gestational (without significant proteinuria) (pregnancy-induced) (transient) → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)transientof pregnancy → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)complicatingpregnancytransient → O13.-

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O10-O16 Edema, proteinuria and hypertensive disorders in pregnancy, childbirth and the puerperium (O10-O16)
  3. O13 Gestational [pregnancy-induced] hypertension without significant proteinuria
Billable codes
6
Subdivisions
6
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
7

Codes in O13

  1. O13.1
    Gestational [pregnancy-induced] hypertension without significant proteinuria, first trimester
    Billable
  2. O13.2
    Gestational [pregnancy-induced] hypertension without significant proteinuria, second trimester
    Billable
  3. O13.3
    Gestational [pregnancy-induced] hypertension without significant proteinuria, third trimester
    Billable
  4. O13.4
    Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
    Billable
  5. O13.5
    Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating the puerperium
    Billable
  6. O13.9
    Gestational [pregnancy-induced] hypertension without significant proteinuria, unspecified trimester
    Billable

Sources of each column.

Instructions

At O13

Includes

  • gestational hypertension NOS
  • transient hypertension of pregnancy

Notes that also apply

Chapter 15 instructions (Notes 6, Excludes1 1, Excludes2 4, Use additional code 1): printed on the chapter 15 page.

Index entries

  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)gestational (without significant proteinuria) (pregnancy-induced) (transient) → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)transientof pregnancy → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)complicatingpregnancygestational (pregnancy induced) (without proteinuria) → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)complicatingpregnancytransient → O13.-
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)gestational (without significant proteinuria) (pregnancy-induced) (transient)complicatingdelivery → O13.4
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)gestational (without significant proteinuria) (pregnancy-induced) (transient)complicatingpuerperium → O13.5
  • Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)complicatingpuerperium, pre-existingpregnancy-induced → O13.9

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

Hierarchy