O14.00 — Mild to moderate pre-eclampsia, unspecified trimester
Is O14.00 billable?
Yes, but O14.00 is an unspecified code. O14.00 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, O14.00 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting O14.00 — the more specific alternatives are listed below.
O14.00 at a glance
| Code | O14.00 |
|---|---|
| Description | Mild to moderate pre-eclampsia, unspecified trimester |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does O14.00 group to?
O14.00 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 O14.00 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O14.0, the nearest indexed parent of O14.00. Use them to find the family, then select the specific code.
- Pre-eclampsia › mild
- Pre-eclampsia › moderate
- Pregnancy › complicated by › pre-eclampsia › mild (single) (uterine)
- Pregnancy › complicated by › pre-eclampsia › moderate (single) (uterine)
- Pregnancy › complicated by › edema › with › gestational hypertension, mild (single) (uterine)
- Hypertension, hypertensive › complicating › pregnancy › gestational › with proteinuria › mild pre-eclampsia (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
- Hypertension, hypertensive › complicating › pregnancy › gestational › with proteinuria › moderate pre-eclampsia (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O14.00 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 O14
The conditions below can never be reported together with O14.00 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- pre-existing hypertension with pre-eclampsia (O11)
Use additional code — inherited from Chapter 15
Report an additional code alongside O14.00 to fully describe the condition. O14.00 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 O14.00, but a patient may have both at the same time. When documentation supports it, O14.00 and the excluded code may both be reported.
How long has O14.00 existed?
O14.00 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.