O48.1 — Prolonged pregnancy
Is O48.1 billable?
Yes — O48.1 is billable for FY2027. O48.1 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O48.1 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O48.1 at a glance
| Code | O48.1 |
|---|---|
| Description | Prolonged pregnancy |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does O48.1 group to?
O48.1 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 O48.1 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to O48.1. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Post-dates › more than 42 weeks gestation (40-42 weeks) (pregnancy) (mother)
- Postmaturity, postmature › maternal (over 42 weeks)
- Post-term › more than 42 weeks gestation (40-42 weeks) (pregnancy) (mother)
- Pregnancy › prolonged (single) (uterine)
- Prolonged, prolongation › pregnancy (of)
- Pregnancy › postmature › more than 42 weeks gestation (single) (uterine)
- Prolonged, prolongation › gestation › mother (of)
- Pregnancy › complicated by › postmaturity › more than 42 completed weeks gestation (single) (uterine)
Inclusion terms
Alternative wording in documentation that is classified to O48.1.
- Pregnancy which has advanced beyond 42 completed weeks gestation
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O48.1 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.-)
Use additional code — inherited from Chapter 15
Report an additional code alongside O48.1 to fully describe the condition. O48.1 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 O48.1, but a patient may have both at the same time. When documentation supports it, O48.1 and the excluded code may both be reported.
How long has O48.1 existed?
O48.1 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.