O01 — Hydatidiform mole
Is O01 billable?
No — O01 is a non-billable header code. O01 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 3 billable codes beneath O01.
Billable codes under this header
O01 at a glance
| Code | O01 |
|---|---|
| Description | Hydatidiform mole |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with O01 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code
Report an additional code alongside O01 to fully describe the condition. O01 is sequenced first.
- code from category O08 to identify any associated complication.
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O01 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- supervision of normal pregnancy (Z34.-)
Excludes1 — never code together — inherited from O00-O08
The conditions below can never be reported together with O01 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Use additional code — inherited from Chapter 15
Report an additional code alongside O01 to fully describe the condition. O01 is sequenced first.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O01, but a patient may have both at the same time. When documentation supports it, O01 and the excluded code may both be reported.
What codes fall under O01? (3)
How long has O01 existed?
O01 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
Which codes are confused with O01?
ICD-10-CM declares these codes mutually exclusive with O01 — exactly one of each pair can be correct for a given encounter.