U.S. ICD-10-CM · FY 2027

O01 ICD-10-CM Code: Hydatidiform mole

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

O01

Hydatidiform mole

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where O01 sits

  1. 1

    Chapter 15

    Pregnancy, childbirth and the puerperium (O00-O9A)

  2. 2

    Section

    Pregnancy with abortive outcome (O00-O08)

  3. 3

    Category O01

    Hydatidiform mole

  4. 4

    Code O01

    Hydatidiform mole

More specific choices

Codes under O01

O01 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for O01.

Code first

No “code first” instruction is listed for O01.

Use additional code

  • code from category O08 to identify any associated complication.

Excludes1

Conditions that should not be reported together with this code.

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

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for O01.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code O01 mean?

O01 is the FY 2027 U.S. ICD-10-CM code for “Hydatidiform mole.”

Is O01 a billable or specific ICD-10-CM code?

No. O01 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is O01 located in ICD-10-CM?

O01 is listed in Chapter 15, Pregnancy, childbirth and the puerperium (O00-O9A), within Pregnancy with abortive outcome (O00-O08) (O00–O08), under category O01, Hydatidiform mole.

What coding notes are listed for O01?

No inclusion terms are listed for O01 in this reference record. No code-first instruction is listed. Additional-code instructions: code from category O08 to identify any associated complication.. Excludes1 notes: chorioadenoma (destruens) (D39.2); malignant hydatidiform mole (D39.2). No Excludes2 note is listed.

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