O98.312 — Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimester
Is O98.312 billable?
Yes — O98.312 is billable for FY2027. O98.312 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O98.312 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O98.312 at a glance
| Code | O98.312 |
|---|---|
| Description | Other infections with a predominantly sexual mode of transmission complicating pregnancy, second trimester |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Which MS-DRGs does O98.312 group to?
O98.312 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
As a secondary diagnosis, O98.312 is a complication or comorbidity (CC), which can move a stay into a higher-paying DRG.
How is O98.312 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O98.31, the nearest indexed parent of O98.312. Use them to find the family, then select the specific code.
- Pregnancy › complicated by › venereal disease NEC (single) (uterine)
- Pregnancy › complicated by › infection › sexually transmitted NEC (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O98.312 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 O98.312 to fully describe the condition. O98.312 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 O98
Report an additional code alongside O98.312 to fully describe the condition. O98.312 is sequenced first.
- code (Chapter 1), to identify specific infectious or parasitic disease
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O98.312, but a patient may have both at the same time. When documentation supports it, O98.312 and the excluded code may both be reported.
Excludes2 — not included here — inherited from O98
The conditions below are not part of O98.312, but a patient may have both at the same time. When documentation supports it, O98.312 and the excluded code may both be reported.
How long has O98.312 existed?
O98.312 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.
What other codes are in the O98.31 family? (3)
- O98.311Other infections with a predominantly sexual mode of transmission complicating pregnancy, first trimester
- O98.313Other infections with a predominantly sexual mode of transmission complicating pregnancy, third trimester
- O98.319Other infections with a predominantly sexual mode of transmission complicating pregnancy, unspecified trimester