O01

Non-billable

Hydatidiform mole

O01 is the ICD-10-CM code for Hydatidiform mole. It is a non-billable category code — use a more specific child code such as O01.0 for billing.

Status
Header (non-billable)
Chapter
O00-O9A
Subcodes
3
Edition
FY2026

O00-O9A Pregnancy, childbirth and the puerperium

What this means — in plain language

MedlinePlus · NIH

Tumors during pregnancy are rare, but they can happen. Tumors can be either benign (not cancer) or malignant (cancer). The most common cancers in pregnancy include breast cancer , thyroid cancer , cervical cancer , lymphoma , and melanoma . Cancer itself rarely harms the fetus, and some cancer treatments are safe during pregnancy. You and your health care provider will work together to find the best treatment. Your…

Read more about Tumors and Pregnancy at MedlinePlus ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

Excludes1 — not coded here

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

Use additional code

  • code from category O08 to identify any associated complication.

Frequently asked questions

What is ICD-10 code O01?
O01 is the ICD-10-CM code for "Hydatidiform mole". It falls under O00-O9A Pregnancy, childbirth and the puerperium.
Is O01 a billable code?
No — O01 is a non-billable header code. Use a more specific child code (such as O01.0) for billing.
What are the subcodes of O01?
O01 has 3 more specific child codes, including O01.0, O01.1, O01.9.
What is excluded from O01?
Excludes1 (not coded here): chorioadenoma (destruens) (D39.2); malignant hydatidiform mole (D39.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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