O28
O28 — Abnormal findings on antenatal screening of mother
Non-billable headerICD-10-CM
O28 is a non-billable header ICD-10-CM code for abnormal findings on antenatal screening of mother. It cannot be billed on its own: choose one of the more specific child codes below.
Excludes1 — never code together
These conditions cannot occur together. Billing both on the same encounter is a denial.
- diagnostic findings classified elsewhere - see Alphabetical Index
Risk adjustment
O28 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.
Code to one of these instead O28
8 child codes. Green means billable.
- O28.0Abnormal hematological finding on antenatal screening of mother
- O28.1Abnormal biochemical finding on antenatal screening of mother
- O28.2Abnormal cytological finding on antenatal screening of mother
- O28.3Abnormal ultrasonic finding on antenatal screening of mother
- O28.4Abnormal radiological finding on antenatal screening of mother
- O28.5Abnormal chromosomal and genetic finding on antenatal screening of mother
- O28.8Other abnormal findings on antenatal screening of mother
- O28.9Unspecified abnormal findings on antenatal screening of mother
Questions about O28
- Is O28 a billable ICD-10-CM code?
- No. O28 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does O28 sit in the tabular list?
- Pregnancy, childbirth and the puerperium (O00-O9A), in the block Other maternal disorders predominantly related to pregnancy (O20-O29).
- What cannot be coded together with O28?
- O28 carries an Excludes1 note, which means the conditions it lists can never be coded together with it on the same encounter.