O35.9XX5 — Maternal care for (suspected) fetal abnormality and damage, unspecified, fetus 5
Is O35.9XX5 billable?
Yes, but O35.9XX5 is an unspecified code. O35.9XX5 is a valid, billable ICD-10-CM code for encounters from October 1, 2026 through September 30, 2027. However, O35.9XX5 is an unspecified or catch-all code. Payers apply additional scrutiny to unspecified codes and many deny them when the medical record supports a more specific option, so check the documentation before selecting O35.9XX5 — the more specific alternatives are listed below.
More specific alternatives
- O35.00X5Maternal care for (suspected) central nervous system malformation or damage in fetus, unspecified, fetus 5
- O35.10X5Maternal care for (suspected) chromosomal abnormality in fetus, unspecified, fetus 5
- O35.AXX5Maternal care for other (suspected) fetal abnormality and damage, fetal facial anomalies, fetus 5
- O35.BXX5Maternal care for other (suspected) fetal abnormality and damage, fetal cardiac anomalies, fetus 5
- O35.CXX5Maternal care for other (suspected) fetal abnormality and damage, fetal pulmonary anomalies, fetus 5
- O35.DXX5Maternal care for other (suspected) fetal abnormality and damage, fetal gastrointestinal anomalies, fetus 5
- O35.EXX5Maternal care for other (suspected) fetal abnormality and damage, fetal genitourinary anomalies, fetus 5
- O35.FXX5Maternal care for other (suspected) fetal abnormality and damage, fetal musculoskeletal anomalies of trunk, fetus 5
- O35.GXX5Maternal care for other (suspected) fetal abnormality and damage, fetal upper extremities anomalies, fetus 5
- O35.HXX5Maternal care for other (suspected) fetal abnormality and damage, fetal lower extremities anomalies, fetus 5
- O35.2XX5Maternal care for (suspected) hereditary disease in fetus, fetus 5
- O35.3XX5Maternal care for (suspected) damage to fetus from viral disease in mother, fetus 5
- O35.4XX5Maternal care for (suspected) damage to fetus from alcohol, fetus 5
- O35.5XX5Maternal care for (suspected) damage to fetus by drugs, fetus 5
- O35.6XX5Maternal care for (suspected) damage to fetus by radiation, fetus 5
- O35.7XX5Maternal care for (suspected) damage to fetus by other medical procedures, fetus 5
- O35.8XX5Maternal care for other (suspected) fetal abnormality and damage, fetus 5
O35.9XX5 at a glance
| Code | O35.9XX5 |
|---|---|
| Description | Maternal care for (suspected) fetal abnormality and damage, unspecified, fetus 5 |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
| 7th character "5" | fetus 5 |
What does the 7th character "5" mean in O35.9XX5?
In O35.9XX5, the 7th character 5 means fetus 5. The 7th character is required for O35.9XX5 to be a valid, complete code.
Same condition, different episode of care — switch the 7th character:
Which MS-DRGs does O35.9XX5 group to?
O35.9XX5 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 O35.9XX5 listed in the Alphabetic Index?
The Alphabetic Index lists these routes under O35.9, the nearest indexed parent of O35.9XX5. Use them to find the family, then select the specific code.
- Pregnancy › complicated by › fetal › abnormality or damage (single) (uterine)
Excludes1 — never code together — inherited from Chapter 15
The conditions below can never be reported together with O35.9XX5 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 O35
The conditions below can never be reported together with O35.9XX5 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 maternal and fetal conditions ruled out (Z03.7-)
Use additional code — inherited from Chapter 15
Report an additional code alongside O35.9XX5 to fully describe the condition. O35.9XX5 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 O35.9XX5, but a patient may have both at the same time. When documentation supports it, O35.9XX5 and the excluded code may both be reported.
Code also — inherited from O35
Two codes may be needed to describe the condition fully. Whether O35.9XX5 is sequenced first depends on the reason for the encounter.
- any associated maternal condition
How long has O35.9XX5 existed?
O35.9XX5 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.