O01.1 — Incomplete and partial hydatidiform mole
Is O01.1 billable?
Yes — O01.1 is billable for FY2027. O01.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O01.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O01.1 at a glance
| Code | O01.1 |
|---|---|
| Description | Incomplete and partial hydatidiform mole |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does O01.1 group to?
O01.1 sits in MDC 14 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 817Other Antepartum Diagnoses with O.R. Procedures with MCCsurgical
- 818Other Antepartum Diagnoses with O.R. Procedures with CCsurgical
- 819Other Antepartum Diagnoses with O.R. Procedures without CC/MCCsurgical
How is O01.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to O01.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Hydatidiform mole › incomplete (benign) (complicating pregnancy) (delivered) (undelivered)
- Hydatidiform mole › partial (benign) (complicating pregnancy) (delivered) (undelivered)
- Mole › hydatid, hydatidiform › incomplete (pigmented)
- Mole › hydatid, hydatidiform › partial (pigmented)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O01.1 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 O01.1 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from O01
The conditions below can never be reported together with O01.1 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 O01.1 to fully describe the condition. O01.1 is sequenced first.
- code, if applicable, from category Z3A, Weeks of gestation, to identify the specific week of the pregnancy, if known.
Use additional code — inherited from O01
Report an additional code alongside O01.1 to fully describe the condition. O01.1 is sequenced first.
- code from category O08 to identify any associated complication.
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O01.1, but a patient may have both at the same time. When documentation supports it, O01.1 and the excluded code may both be reported.
How long has O01.1 existed?
O01.1 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.