O31.31X3 — Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 3
Is O31.31X3 billable?
Yes — O31.31X3 is billable for FY2027. O31.31X3 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O31.31X3 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O31.31X3 at a glance
| Code | O31.31X3 |
|---|---|
| Description | Continuing pregnancy after elective fetal reduction of one fetus or more, first trimester, fetus 3 |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "3" | fetus 3 |
What does the 7th character "3" mean in O31.31X3?
In O31.31X3, the 7th character 3 means fetus 3. The 7th character is required for O31.31X3 to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does O31.31X3 group to?
O31.31X3 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 O31.31X3 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O31.3, the nearest indexed parent of O31.31X3. Use them to find the family, then select the specific code.
- Pregnancy › continuing following › elective fetal reduction of one or more fetus (single) (uterine)
- Pregnancy › complicated by › fetal › reduction (single) (uterine)
- Pregnancy › complicated by › fetal › selective termination (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O31.31X3 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.-)
Use additional code — inherited from Chapter 15
Report an additional code alongside O31.31X3 to fully describe the condition. O31.31X3 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 O31.31X3, but a patient may have both at the same time. When documentation supports it, O31.31X3 and the excluded code may both be reported.
Excludes2 — not included here — inherited from O31
The conditions below are not part of O31.31X3, but a patient may have both at the same time. When documentation supports it, O31.31X3 and the excluded code may both be reported.
How long has O31.31X3 existed?
O31.31X3 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.