O22.5 — Cerebral venous thrombosis in pregnancy
O22.5 is a non-billable header ICD-10-CM code for cerebral venous thrombosis in pregnancy. It cannot be billed on its own: choose one of the more specific child codes below.
Inclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Cerebrovenous sinus thrombosis in pregnancy
Excludes1 inherited from the categories above O22.5
These are not written on O22.5, but they bind it: a note on a category applies to every code beneath it. Billing O22.5 with anything listed here is a denial.
Excludes2 inherited from the categories above O22.5
Also inherited, and the opposite of Excludes1: these conditions are not part of O22.5, but a patient can have both, so you may code both.
Other codes that can never be billed with O22.5
These codes carry an Excludes1 note pointing at O22.5. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading O22.5 alone.
- G08Intracranial and intraspinal phlebitis and thrombophlebitis
Risk adjustment
O22.5 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 history
O22.5 has not changed since FY2024 — no addition, revision or deletion across the three most recent ICD-10-CM releases.
Code to one of these instead O22.5
4 child codes. Green means billable.
Related codes at this level
Codes that share O22. If O22.5 is not quite right, the correct code is usually one of these.
Questions about O22.5
- Is O22.5 a billable ICD-10-CM code?
- No. O22.5 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
- Where does O22.5 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 O22.5?
- O22.5 carries Excludes1 notes, which means the conditions they list can never be coded together with it on the same encounter. Some are written on the categories above O22.5 (O22) and apply to it just the same.