DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

O01 Hydatidiform mole

  • Header · not billable

O01 is not billable. The category heads 3 billable codes in FY2027: the 3 codes directly below it.

Index → code

  • Trophoblastic disease → O01.9
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered) → O01.9
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)partial → O01.1

Where it sits

  1. Chapter 15 Pregnancy, childbirth and the puerperium (O00-O9A)
  2. O00-O08 Pregnancy with abortive outcome (O00-O08)
  3. O01 Hydatidiform mole
Billable codes
3
Subdivisions
3
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
13

Codes in O01

  1. O01.0
    Classical hydatidiform mole
    Billable
    Inclusion terms 1

    Inclusion terms

    • Complete hydatidiform mole
  2. O01.1
    Incomplete and partial hydatidiform mole
    Billable
  3. O01.9
    Hydatidiform mole, unspecified
    Billable
    Inclusion terms 2

    Inclusion terms

    • Trophoblastic disease NOS
    • Vesicular mole NOS

Sources of each column.

Instructions

At O01

Excludes1

  • chorioadenoma (destruens) (D39.2) D39.2
  • malignant hydatidiform mole (D39.2) D39.2

Use additional code

  • code from category O08 to identify any associated complication. O08

Notes that also apply

Block O00-O08 instructions (Excludes1 1): printed on the block page.

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

Index entries

  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered) → O01.9
  • Trophoblastic disease → O01.9
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)classical → O01.0
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)complete → O01.0
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)incomplete → O01.1
  • Hydatidiform mole (benign) (complicating pregnancy) (delivered) (undelivered)partial → O01.1
  • Mole (pigmented)hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered) → O01.9
  • Mole (pigmented)hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered)classical → O01.0
  • Mole (pigmented)hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered)complete → O01.0
  • Mole (pigmented)hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered)incomplete → O01.1
  • Mole (pigmented)hydatid, hydatidiform (benign) (complicating pregnancy) (delivered) (undelivered)partial → O01.1
  • Pregnancy (single) (uterine)complicated by (care of) (management affected by)hydatidiform mole → O01.9-
  • Pregnancy (single) (uterine)molar NEChydatidiform → O01.9-

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