O99.825 — Streptococcus B carrier state complicating the puerperium
Is O99.825 billable?
Yes — O99.825 is billable for FY2027. O99.825 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. O99.825 may be submitted for encounters from October 1, 2026 through September 30, 2027.
O99.825 at a glance
| Code | O99.825 |
|---|---|
| Description | Streptococcus B carrier state complicating the puerperium |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to O99.825?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name O99.825 directly.
CMS will reject this code as the principal diagnosis on an inpatient claim. It describes something other than the condition chiefly responsible for the admission.
Which MS-DRGs does O99.825 group to?
O99.825 sits in MDC 14 and helps define the logic of 1 MS-DRG (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 769Postpartum and Post Abortion Diagnoses with O.R. Proceduressurgical
How is O99.825 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to O99.825. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Puerperal, puerperium › infection › maternal › streptococcus group Bcarrier state (complicated by, complications)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O99.825 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 O99.82
The conditions below can never be reported together with O99.825 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- Carrier of streptococcus group B (GBS) in a nonpregnant woman (Z22.330)
Use additional code — inherited from Chapter 15
Report an additional code alongside O99.825 to fully describe the condition. O99.825 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 O99
Report an additional code alongside O99.825 to fully describe the condition. O99.825 is sequenced first.
- code to identify specific condition
Use additional code — inherited from O99.8
Report an additional code alongside O99.825 to fully describe the condition. O99.825 is sequenced first.
- code to identify condition
Excludes2 — not included here — inherited from Chapter 15
The conditions below are not part of O99.825, but a patient may have both at the same time. When documentation supports it, O99.825 and the excluded code may both be reported.
Excludes2 — not included here — inherited from O99
The conditions below are not part of O99.825, but a patient may have both at the same time. When documentation supports it, O99.825 and the excluded code may both be reported.
- when the reason for maternal care is that the condition is known or suspected to have affected the fetus (O35-O36)
Excludes2 — not included here — inherited from O99.8
The conditions below are not part of O99.825, but a patient may have both at the same time. When documentation supports it, O99.825 and the excluded code may both be reported.
- genitourinary infections in pregnancy (O23.-)
- infection of genitourinary tract following delivery (O86.1-O86.4)
- malignant neoplasm complicating pregnancy, childbirth and the puerperium (O9A.1-)
- maternal care for known or suspected abnormality of maternal pelvic organs (O34.-)
- postpartum acute kidney failure (O90.49)
- traumatic injuries in pregnancy (O9A.2-)
How long has O99.825 existed?
O99.825 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.