O26.843 — Uterine size-date discrepancy, third trimester
Is O26.843 billable?
Yes — O26.843 is billable for FY2027. O26.843 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O26.843 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O26.843 at a glance
| Code | O26.843 |
|---|---|
| Description | Uterine size-date discrepancy, third trimester |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does O26.843 group to?
O26.843 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 O26.843 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O26.84, the nearest indexed parent of O26.843. Use them to find the family, then select the specific code.
- Discrepancy › uterine size date
- Pregnancy › complicated by › size date discrepancy (single) (uterine)
- Pregnancy › complicated by › uterine size date discrepancy (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O26.843 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 O26.84
The conditions below can never be reported together with O26.843 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- encounter for suspected problem with fetal growth ruled out (Z03.74)
Use additional code — inherited from Chapter 15
Report an additional code alongside O26.843 to fully describe the condition. O26.843 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 O26.843, but a patient may have both at the same time. When documentation supports it, O26.843 and the excluded code may both be reported.
Excludes2 — not included here — inherited from O20-O29
The conditions below are not part of O26.843, but a patient may have both at the same time. When documentation supports it, O26.843 and the excluded code may both be reported.
How long has O26.843 existed?
O26.843 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.